Friday, January 6, 2023

Human body is one of the major signs of Allah

 

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ISLAMIC MEDICAL EDUCATION RESOURCES-05

Reading the Signs of Allah through Basic Medical Sciences: The Biological Miracle

Presented at a training workshop on the Islamic Input in the Medical Curriculum held at the Faculty of Medicine UNISSULA on 21st December 2008 by Professor Dr Omar Hasan Kasule Sr. MB ChB (MUK), MPH (Harvard), DrPH (Harvard) EM: omarkasule@yahoo.com. WEB: http://omarkasule.tripod.com

1.0 PERFECTION, OPTIMALITY, INCOMPARABILITY

1.1 CONCEPTS

Allah’s creation is perfect. Allah is the best creator, ahsan al kahliqin (2:138 & 37:125). He perfected everything He made, kamal al khalq (27:88 & 95:4). He made humans in the best image, ahsan suurat (40:64 & 95:4). The process of perfection went through four stages: creation, khalq; making due proportions, taswiyat; balancing, ta ‘adil; and making the best image, taswiir. The biological perfection was created and not evolved. Every living and non-living things was created perfect de novo. All what Allah created has a purpose (23:115). This applies to the whole organism or its constituent tissues and cells. Order, nidhaam; harmony; and perfection, kamaal, are part of predestination, qadar, and are not accidental. Denying the existence of a creator is an intellectual and mental aberration that is incompatible with logic because perfection and harmony could not arise by chance. The constant physical laws, sunan al kawn, operate in both inanimate and biological systems. Every human is unique and is different from everybody else, a testimony to the power of the Creator. The human is created in the best and optimal fashion, ahsana taqwiim (95:4) and all biological systems are optimal. Change is governed by natural laws, sunan llah. There is a balance between constancy and change. The Qur’an challenged humans and other creations to create the like of Allah’s creation and proved them incapable of facing the challenge (7:191 & 25:35-36). Cloning, genetic engineering, and selective breeding are not de novo creations and can not be compared to Allah’s creations. No human or any other being can create new life, ‘ajz al shuraka ‘an al khalq (7:191 & 25:35-36). Human actions are imperfect.

 

1.2 MANIFESTATIONS: ANATOMY

Perfections of perfection and optimality are found in all medical disciplines. In anatomy, for example, parity in general (11:40 & 51:49), parity of gender (92:3 & 78:8), parity of organs (12:84 & 111:1), symmetry, both circular and lateral symmetry, laterality of left and right (7:17 & 84:7-8), adaptation of structure to function, consistency and predictability, and orderly change (staged, anticipated, and protective measures against mistakes).

 

1.3 MANIFESTATIONS: PHYSIOLOGY and BIOCHEMISTRY

Manifestations of perfection and optimality in physiology, biochemistry, & pharmacology are: the human organism functioning as a single entity (MB2018), correlation between anatomy and physiology, repeatability/replicability, specificity, specialization, complementality, co-operation, a hierarchy of importance, information processing/perception, reserve capacity in organs and compensation for overloadThe complex human organism has few basic building blocks: amino acids, monosacharides, and fatty acids. The discovery of the periodic table of elements is one of the strong indicators that there is order in the universe. Metabolism of new synthetic molecules is a miracle of creation that needs appreciationThe finding that synthetic molecules can be metabolized by the biological systems indicates the existence of a unifying scheme of creation based on sunan al laahi fi al kawn.

 

1.4 MANIFESTATIONS: MICROBIOLOGY and PARASITOLOGY – not yet written

 

1.5 MANIFESTATIONS: BIOSTATISTICS AND EPIDEMIOLOGY

Manifestations of perfection and optimality in biostatistics and epidemiology are consistency & predictability, inference and causality, and probability.

 

2.0 CONTROL

2.1 CONTROL IN ANATOMY

There is centralized master control of physiological functions mediated by the pituitary gland, the hypothalamus, and the CNS. This control has a genetic basis in the form of DNA. DNA has 6x10e9 bits of information called codons. These represent 10E7 genes. Each gene codes for one protein molecule. Command and control in physiology relate very well to the concept of tauhid. For efficiency there must be a controlling center otherwise contradictions from many un-coordinated centers of control will lead to failure. An orderly and harmonious universe cannot have more than one master. Examples of control are the integrity of DNA despite continuous mitosis, normal cell growth, control of embryological development

 

2.2 CONTROL IN PHYSIOLOGY, BIOCHEMISTRY

Examples of control are control of balance (fluids, electrolytes, iron, acid-base, heat energy, and temperature). There is balance between entropy (disorder) and order, between coagulation and fibrinolysis, between sympathetic and parasympathetic systems, between left and right brain hemispheres, between anabolism and catabolism. Chemical reactions tend to an equilibrium as defined in the Hasselbach-Henderson law.  Phenomena of control manifest as control of the heart beat, control of vomiting, control of swallowing, control of coughing, control of gagging, control of posture, control of micturition, control of defecation, control of lactation, control of parturition, control of cell membrane permeability, control of genetic expression, and control of hormonal receptors. Phenomena of periodicity manifest as cycling of matter between organic and inorganic and the circadian rhythm. Constancy and predictability are the basis for diagnostic tests and drug action.

 

3.0 HOMEOSTASIS, ‘i’itidal

3.1 THE QUR'ANIC CONCEPT OF THE GOLDEN MEAN

Four Qur’anic concepts relate to the golden mean: mizan, wasatiyah, tadhafu’u, and I’itidaal. Concept of mizan refers to balance. Concept of wasatiyyat refers to the center. Concept of tadafu’u refers to action and reaction. The concept of i’itidal refers to equilibrium. There is equilibrium between the internal and external environments. Homeostasis restores the normal state once it has been disturbed. Tauhid is related to homeostasis. Tauhid implies that the whole cosmos and what it contains have one deliberate creator. The contents must relate to one another in some harmonious way. It is unthinkable that the one creator could create systems that are contradictory to one another. The harmony must however be looked at in a dynamic way. Because there are constant changes, there must arise from time to time contradictions in the state of flux. There must therefore exist mechanisms for restoring the status quo after the changes have been accomplished. Thus tauhid and homeostasis are closely related. Feed-back may be positive or negative. Negative feed-back operates in homeostasis deviations from the norm are detected by specialized sensors and compensatory changes are triggered to restore the status quo. Positive feed-back is a very dangerous concept. If a change occurs, positive feed-back will reinforce it in a cyclic way that causes more of the same until all homeostasis is lost. The base-line is not constant. It changes with the environment and time. Variation can be within the range of normality or outside the range of normality. Change may be temporary or permanent. Sleep and fatigue are temporary. Lameness and blindness are permanent changes. The human body is in harmony with its internal and external milieu. The internal and milieu and the external milieu are themselves in harmony.

 

3.2 CARDIO-VASCULAR HOMEOSTATASIS:

The control centers are in the spine, medulla oblongata, the cortex, or the chemoreceptors. The input is from baro-receptors, chemo-receptors, cerebellum, and cerebrum. The output is through the autonomic nervous system to the heart and blood vessels. The hormonal factors involved are autocoids, adrenal medulla catecholamines, adrenal cortical hormones, and vasopressin. Oxygen and carbon dioxide have a direct effect on the smooth muscles of the pre-capillary sphincters of arterioles. Kidney auto-regulation also keeps blood flow at a constant rate. The integrated control of cardiac output depends: sympathetics, catecholamines, and increased venous return.

 

3.3 RENAL EXCRETORY HOMEOSTATASIS:

The kidney maintains plasma osmolality by ultra filtration followed by selective tubular reabsorption.

 

3.4 RESPIRATORY HOMEOSTASIS

Neural and chemical mediators are involved in respiratory control. The respiratory rate is controlled by the respiratory center, stretch receptors in the lungs, peripheral chemoreceptors, and central chemo-receptors. The diaphragm and the intercostals are responsible for respiratory movements.

 

3.5 GIT HOMEOSTASIS

There is balance of glucose, lipids, and nitrogen. Glucose is the final pathway of carbohydrate metabolism. The level of glucose in the blood is finely controlled. Glucose balance depends on dietary intake, rate of entry into cells, and the homeostatic activity of the liver. There is a balance among glycolysis, gluconeogenesis, and glycogenolysis. The level of free plasma fatty acids is finely controlled. It is increased by lipolysis. It is decreased by incorporation into lipoproteins, binding to albumin, and deposit as triglycerides. Plasma cholesterol is also kept in balance. It is increased by dietary intake, liver synthesis through a negative feed-back control, and breakdown of lipid stores. It is removed through feces and bile salts. Intake of nitrogen is dietary. The output is by excretion is in the form of excretion as urea and ammonia; about 80% of the ingested nitrogen is excreted as urea.

 

4.0 INTERACTION WITH THE ENVIRONMENT

4.1 CONCEPTS

The miracle of the human body is more startling when seen in its interaction with the environment. The interaction between the internal and external environments is purposive and is not a product of chance. The nervous and endocrine system ensure that the human body can adjust to rapidly changing circumstances of the external environment. This even includes changes on anticipation of external changes. The interaction between humans and their external and internal environments is part of Allah’s grand design and is not by mistake. This implies that this interaction has to be harmonious and follows the laws of Allah sunan llah fi al kawn. The human body is programmed to interact with the environment in the most efficient way. However humans because of their free will can behave in ways that produce unhealthy interactions. There are some phenomena like disease or drought that may bring adversity to humans. These are part of the grand design to ensure that there are checks and balances in the eco-system that ensure equilibrium. The adversities are therefore not created for punishment of humans. The universe was placed under the humans (taskhir). They control and change it as they want. However this control is sometimes not proper resulting into imbalances and problems. The crucial question is to determine what changes are bad because they derange the permanent fixed laws of nature, al sunan. A decision must also be made on what changes must be made for purposes of building a civilization.

 

4.2 THE PHYSICAL ENVIRONMENT

The human body is able to adapt to all types of physical environments. Human eucaryotic cells are less dependent on the external chemical environment that pro-karyotic cells. They have in a way created their own environment in their internal environment. Human can change environment. Some of the changes are for the good of the eco-system while some others are definitely harmful. Humans can sustain injury from the environment.

 

4.3 THE BIOLOGICAL ENVIRONMENT

The biological environment consists of parasites, animals, and plants. Humans and parasites have evolved a mutual adaptation. This takes several forms: symbiosis, commensalism, and parasitism. Parasites undergo antigenic change to avoid host immune defences. Plants are a source of food. They are involved in the oxygen, carbon dioxide, and nitrogen cycles that are necessary for human comfort. Human are able to eat some plants or parts of plants for which they have the appropriate digestive enzymes. Plants or parts of plants indigestable by humans still provide human food by being eaten by herbivorous. Under the concept of taskhiir, the earth and its contents were put at the disposal of humans. Taskhiir has its limitations based on the need to establish balance and equilibrium in the eco-system and protect humans from harm. Animals and plants are a source of food. Humans are at the top of the food chain and all food webs.

 

4.4 MICROBIOLOGICAL ENVIRONMENT

Micro organisms are viruses, prokaryotes, and eukaryotes. Viruses are the smallest infective agents and are obligate intracellular parasites that depend on the host for survival. In prokaryotes DNA is not bound in a membrane and there is no separation between the nucleus and the cytoplasm. Bacteria, spirochetes, mycoplasmas, and rickettsieaie are prokaryotes. Eukaryotes have their DNA separated from the cytoplasm. Protozoa, fungi, helminthes, arthropods are eukaryotes. There are 3 basic types of host-parasite relations: symbiosis, parasitism, and commensalism. Vectors transport parasites in disease causation. Parasites have to overcome overcome host resistance and barriers before disease causation. There is a balance sheet between the benefits and harm of microorganisms. There are many Islamic teachings about avoiding infections.

 

4.5 CHEMICAL ENVIRONMENT

Water is 45-75% of body weight. Tissues consist of inorganic substances, carbohydrates, lipids, and proteins. Elements higher concentration in humans than earth are H, C, and I. Elements the same concentration in humans and human body and the earth are P, S, Cl, K, and Ca. Humans take elements from the earth as food, drink and through respiration. C is the basis of organic compounds. Humans do not release dangerous chemicals into the environment eg ammonia is detoxified and turned into urea. Humans have complicated the simple chemical environment bequeathed to them by producing new chemicals.

 

5.0 ALIMENTARY SYSTEM, maidat

5.1 FOOD AS RIZQ

Food is needed for energy, growth, repair, and maintenance of the body. The Qur'anic term rizq means sustenance. It refers to to food useful to the body. Rizq is from Allah alone and He provides for all. The alimentary canal is a tube outside the body in direct contact with the external environment. Some food ingested at the mouth exits at the anus without entering the body. Digested food is absorbed by the intestines to enter the internal environment. The alimentary canal has a role in balancing the internal and external environments. It takes material from the environment, processes it, and returns it to the environment. Human appetite for food (a requirement for survival) is so strong that prayer is delayed when food is presented. Nutritional habits reflect underlying visions, beliefs, and cultural experiences. The alimentary system can be looked at as the final pathway for human corruption because food security is the underlying but often unstated purpose behind crime, corruption, treachery, amassing of wealth, aggression, and many other transgressions. Believer eat to get energy for ‘ibadat; non-believers may eat for enjoyment or to get energy for evil. A believer is satisfied with less food than a non-believer. The search for food and its ingestion is part of ‘ibadat. The human is rewarded for efforts to feed himself or herself. The ‘ibadat aspect is emphasized by the fact the feeding starts with the basmalah and end with the hamd. Fasting of Ramadhan is one the major acts of obligatory physical ibadat. It serves the functions of cleansing and protecting the body.

 

5.2 DIGESTION AND ABSORPTION:

Digestion takes place in the mouth, the stomach, and the intestines. The prophet taught measures to prevent oral infections: rinsing the mouth after a meal and use of the tooth-pick. He taught stopping to breathe during drinking because of deglutition apnea. The Qur'anic term batn refers to the whole gastro-intestinal tract or the whole internal cavity and not only the anatomical stomach. Humans have to eat at intervaks because of limited internal food storage. The limited storage enables them to engage in ibadat and other activities of human civilization without having to eat continuously. Besides its digestive function, the stomach acts to warn humans of impending starvation by its hunger pangs. The Qur'an mentioned the intestine as being destroyed by bad food.

 

5.3 ELIMINATION

The alimentary system separates the nutritious food to be absorbed from the non-nutritious one to be eliminated as waste. It protects the environment by detoxifyting ingested toxins or detoxifying metabolic products before elimination into the ecosystem. Feces are considered filth (najasat) largely because of their content of infective and toxic material. Proper disposal of excreta at both the individual and community levels is a mark of civilizational development. Islam started with a revolution in hygiene by teaching proper toilet etiquette and cleaning with water in both wudhu and ghusl. Hygiene is a pre-requisite for many humans to live together (civilized existence) because it prevents infectious and toxic disease.

 

5.4 MATABOLISM

The complex human food in all its varieties is in the final analysis reduced to a few chemical compounds after digestion (amino acids, glucose, and fatty acids). They are all finally reduced to Acetyl CoA that enters the Krebs cycle. The main purpose of the metabolic processes is to generate energy from food. The liver is the chemical intermediary between the alimentary system and the rest of the body. It is responsible for maintenance of the body's chemical and metabolic homeostasis. It is the great factory involved in both anabolism and catabolism. The liver is also the great protector of the body by detoxifying toxic substances from the alimentary tract.

 

5.5 GIT and NUTRITIONAL DISORDERS

The diseases of over-nutrition are obesity, diabetes mellitus, ischemic heart disease, and atherosclerosis. The prophet taught the rule of the thirds as a guide for food intake: one third for solid food, one third for water, and one third empty (Musnad Ahmad). He taught that Muslims do not eat until they are hungry and when they eat they do not fill their belly. Ibn al Qayim defined three levels of food: necessary, hajat, sufficient, kifayat, and excess, fadhlat. The necessary is for maintenance of life and health. The sufficient is for psychological satisfaction. The excess is harmful. Obesity is a result of excessive intake without matching physical exercise. In a hadith reported by Aisha, the prophet described obesity as one of the signs of social degradation.

 

6.0 URO-GENITAL & CARDIO-RESPIRATORY SYSTEMS

6.1 EXRETORY SYSTEM, jihaz bawli

The excretory system consists of the kidneys, ureters, bladder, and urethra. The system forms and voids urine and ensures fluid and electrolyte balance It ensures homeostatic control of the body by controlling and maintaining the volume, pH, and ionic composition of plasma. The kidney is the most important organ in homeostasis fulfilling the physical laws, sunan al kawn, relating to equilibrium and balance, tawazun & i’itidaal. Urine is filth, najasat. The Law teaches the importance of avoiding being soiled by urine and teaches measures to safeguard against urine. Washing of hands and the external excretory organs is required after urination. The use of the right hand is forbidden. Urine of breast-feeding infants is treated differently from that of adults in washing. The urine of female infants is also treated differently from that of males. Urination on the street or public places is forbidden.

 

6.2 GENITAL SYSTEM, jihaz tanasuli

The Qur’anic term farj is used to refer to the external genitalia of both males and females. External genitalia must be private and are considered part of ‘awrat. The uterus, rahim, had special mention in the Qur’an as the abode of the fetus. Fertilization and growth inside the uterus increase chances of survival of human fetii compared to frogs and fish whose ova are fertilized and grow outside and birds whose fetii grow partially inside. Female reproductive physiology manifests predictable cyclicity that is one of the signs of Allah, ayaat al llaah. The ovarian, menstrual, uterine, and vaginal cycles recur every month for 30-40 years of the woman’s life and are closely related to the human reproductive function. The menstrual flow lasts a few days and recurs in a cycle of 28 days on average. The menstrual cycle manifests one of the sunan of Allah because its duration of 28 days is the same as the duration of the lunar cycle. Menstruation is a normal process at the end of each ovarian cycle. Unlike Yahudiyyat, Islam does not make a menstruating woman a social outcast. Menstruation is a cause of physiological stress therefore fasting or prayers are excused. Copulation is a source of physical pleasure but has a deliberate reproductive function that is considered one of the Purposes of the Law, maqasid al shari’at. The Qur’anic term nutfat or mani refers to the male and female gametes that are the spermatozoa and ova respectively. Sex determination is not random but is determined by Allah. Sexual identity is a result of biology and socialization. Some deviant cultures encourage people of one gender to behave like those of another gender contrary to the teachings of Islam that emphasize very strong gender identity and a sharp demarcation between males and females. There are severe punishments for feminine men, al mukhanathin, and masculine females, mutarajilaat. Homosexuality is also severely punished.

 

6.3 THE HEART

The Qur’anic term qalb is not used in an anatomical sense. The heart is a pump that provides the energy to drive blood through the circulatory system. Parity of the heart is understandable from the embryological point of view. Separation of the left and right hearts ensures supply of well-oxygenated blood to the tissues. Control of the heart rate is by the electrical conduction system.

 

6.4 THE BLOOD CIRCULATORY SYSTEM

The prophet mentioned the flow of blood inside the body. Ibn Nafees was the first to describe circulation centuries before European writers. The circulatory system is an illustration of the sunan of equilibrium and control. Blood circulation follows biophysical principles and is another illustration of the unity of creation because physical and biological phenomena follow the same laws, sunan al kawn. The efficiency of the heart’s energy conversion is 20%, better than many machines. Blood flow to the skin increases in hot temperature to release heat. During digestion more blood flows into the GIT. During exercise cardiac output increases ten-fold and work done by the heart can increase 500-fold.

 

6.5. RESPIRATORY SYSTEM

The Qur’an mentioned the chest, sadr but not as an organ of respiration. The lungs are the main organs of respiration. The lungs provide a big opportunity for exchange between the internal and external environments. The term respiration can be used in 2 different ways to mean ventilation or tissue respiration. Coughing and sneezing expel irritants. In coughing the glottis is closed raising intra-ductal pressure to 100mm of mercury. When the glottis is opened suddenly, a jet of air under high pressure is released accompanied by the familiar sound of coughing. The glottis is not closed in sneezing but pressure still builds up. Sneeze is from Allah. Sneeze in salat is from shaitan. The prophet taught the etiquette of sneezing and yawning. The sneezer should praise Allah. It is obligatory for those present to respond to the sneezer. Respiratory movements have been used over the millennia as indicators of life. The Qur’an describes the last moments as sakrat al mawt as respiration begins to fail.

 

7.0 LOCOMOTOR and PROTECTIVE SYSTEMS

7.1 LOCOMOTOR / MUSCULO-SKELETAL SYSTEM, ‘idhaam & ‘adhalaat

The skeleton has three main functions of support, movement, and protection. It was mentioned in the Qur’an as bones, ‘adhm. Muscles are mentioned in the Qur'an as meat, lahm. Organs are used for worship, work, aggression, and sinning. Wudhu involves washing exposed organs of the body: the face, hands, forearm, leg, ear, mouth, nose, and hair. The upper limb is for manipulation and is specialized for manual dexterity. The lower limb is for posture and mobility and is specialized for weight bearing and walking. The sophisticated human hand is responsible for the advanced human civilization by making tools. The upper and forearms are levers to position the hand. The human upright posture allows use of upper limb free for manipulation. Control of posture and movement in humans is very advanced to enable upright walking. The musculo-skeletal system act as levers and pulleys with a mechanical efficiency higher than that of man-made machines. Continuous movement and exercise of the musculo-skeletal system is a physiological necessity for growth in infants and to prevent disuse atrophy. Salat is physical exercise repeated five times a day. The Prophet engaged in physical exercise and Omar Ibn al Khattab encouraged physical sports. Physical exercise is best undertaken while doing some work that is useful for the community. The human facial muscles are  used in both verbal and non-verbal communication. Body language and body posture can convey very sophisticated messages and emotions. The vocal apparatus, the mouth, the tongue, pharynx, and the larynx, help in producing noises that may be happiness, anger, or fear. They also produce words that have enabled humans have the most sophisticated language and enable recitation of the Qur’an in a sweet voice.

 

7.2 SURFACES AND MEMBRANES

The Qur’an described skin as a site of punishment because of the sensory function. It also described psychological and physiological reaction of the skin to mention of the name of Allah. The skin will on the last day bear witness because it is used in sinful activities. The functions of the skin are: protection against mechanical injury, excretion through sweat, sensory input, temperature regulation, immune protection, protection against UV rays. Skin color is controlled by 4 pairs of genes. Chemically and optically, it is the melanin in the epidermis and the blood vessels in the dermis that define skin color. The density of melanocytes in the skin does not differ between darker and lighter races. Darker races have more active melanin production than lighter races. The primary purpose of melanin is to protect the skin against cosmic radiation especially ultra-violet radiation. Skin whorls and patterns are unique for each individual. The probability of two individuals having the same pattern is very low. Serous membranes allow smooth movement of organs and play a role in immune protection. Human nails unlike those of animals do not play a significant role in self-defense against attack. They are however used to scratch the skin and to improve grip for some small objects. Tears, sweat, and sebum play non roles in non specific immune protection. The number, size, and depth of melanin particles determine the color of hair from black to blonde. White hair has no melanin. Red hair has iron-rich pigment. Straightness and curliness of hair of hair depend on the shape of the pit of the follicle (straight sharply curved) or shape of hair shaft (round or oval). The pattern of baldness is under genetic control. Hair is part of female beauty.

 

7.3 THE ENDOCRINE SYSTEM

Functions of hormones are morphogenesis, hemostasis, metabolic regulation, and functional integration. The human hormonal system plays a major part in the flight/fight preparation. Modern sedentary humans have the same hormonal reactions as ancient hunters bit do not face the same physical stresses and risks. The hormonal cascade refers to the chain of command and control with ultimate central control in the hypothalamus. The flow of information is as follows: environmental signal, CNS, limbic system, hypothalamus, anterior pituitary, target organ, ultimate hormone, and systemic effects. The final hormone acts by negative feed-back on the hypothalamus, pituitary, and even the central nervous system.

 

7.4 THE IMMUNE DEFENCE SYSTEM

Immune defense is recognition and elimination on non-self (foreign) material. Immune defense may be cellular or humoral. Psycho-neuroimmunological research is uncovering what empirical observation has always shown that psychological factors such as stress affect susceptibility to disease.

 

7.5 HEMOSTASIS

The Qur’an mentioned blood as ddam. The chief function of blood is transport. It is also a buffer. The purpose of the hemostatic system is to maintain the integrity of the closed circulatory system in case of vessel rupture.

 

8.0 THE SENSORY SYSTEM

8.1 VISION

Vision is physical or moral. The eye is the organ of vision and emotional expression (sadness, pleasure, beauty, communication). Light is a condition for sight. The sources of light are the sun, the moon, the stars, and lamps. Darkness is either physical or moral. Human vision is limited, can be deceived by a mirage, and has poor speed and size discrimination. Blindness can be moral or physical.

 

8.2 HEARING

The ear is an organ of hearing. Biaural hearing is a bounty from Allah enabling humans to judge distance. Deafness can be physical or moral.

 

8.3 CHEMICAL SENSATION

Human smell and taste are weak. Odors may be pleasant or unpleasant. Smell and taste of food are appetizing, stimulates salivary and gastric secretions. Humans cannot smell out enemies but can smell or taste dangerous and discard harmful substances. The poor food discrimination of babies due to poor smell and taste enables them to like a wide range of food. Poor human smell is a bounty because they are spared many bad odors in the environment. Chemical sensations by chemoreceptors and osmoreceptors are useful in homeostasis.

 

8.4 SURFACE SENSATION

The Qur'an mentioned touch as lams or mass. The skin is a sensory organ. The hand is a sense organ that feels size, shape, and texture. The tactile ability of the hand is the basis of human civilization because it enables manufacture and use of tools. Touch can also be used to show love and intimacy. Earthly pain is less severe than pain in the hereafter. Somatic pain is a bounty for humans as an early warning of tissue injury. It is Allah’s bounty that most visceral pain is not felt. Heat is a punishment in the hereafter, and a discomfort on earth. It is Allah’s bounty to protect humans from heat by clouds and shades. Cold is the opposite of heat. Cooling rain water and cold drinking water are bounties of Allah. Hunger and thirst can be physiological, psychological, and moral. They are a warning to replenish food stocks before depletion and do not always indicate immediate danger or pathology. Diabetes mellitus is associated with hunger and diabetes insipidus is associated with thirst. Moral hunger manifests as loss of control of appetite and not getting satisfied. Hunger is a test and a punishment. There will be no hunger in jannat. The food of the dwellers of hell does not cure or satisfy hunger.

 

8.5 OTHER SENSORY MODALITIES

It is Allah’s bounty that humans are not consciously aware if visceral, kinesthetic or propioceptive sensation otherwise they would be overwhelmed by information. Allah wanted humans to concentrate on sensory input from the external and not the internal environment. The Qur’an and sunnat have described phenomena of extra-sensory perception (ESP) as inspiration, ilhaam; intuition, hadas; instincts, jibillat; and imagination, khiyaal; telepathy; dreams; and revelation. Scientific understanding of ESP is limited. Only dreams of prophets are true. The Qur’an and sunnat have condemned astrology, foretelling, divination, and sorcery.

 

9.0 THE NERVOUS SYSTEM

9.1 QUR'ANIC CONCEPTS RELATING TO THE NERVOUS SYSTEM

The Qur’an mentioned the functions of the nervous system (thought, memory, forgetting, and emotions) in association with 4 Qur’anic phenomena (naasiyat, lubb, qalb/nafs, fuaad, and dhihn. Humans have freedom of action on a limited scale.

 

9.2 STRUCTURE and FUNCTION OF THE NERVOUS SYSTEM

The nervous system consists of the central and peripheral nervous systems. Most physiological functions are autonomic not under conscious cortical control. Human behavior can be explained by the nafs, organic factors (chemical and anatomical), early learning, early conditioning, and socialization. Genetically-determined organic factors of behavior do not excuse humans from accountability because the nafs can override organic factors. Diet and environmental factors may also affect behavior. Humans can artificially change their behavior by using chemicals and intoxicants.

 

9.3 THE INTELLECTUAL FUNCTION, ‘aql

Intellect, ‘aql, includes conceptualisation and categorization, measuring and counting, concrete and abstract thought, causal reasoning, and problem solving. It cannot reason out all moral issues without guidance from revelation. It is very creative and imaginative. It is the basis of judgment (reconciling apparently contradictory information). It is is needed for sensory perception. It is needed for acquisition of knowledge. It is related to observation The 3 main intellectual processes are understanding, fahm; insight, idraak; and judgment, hukm. Consciousness, shu’ur, is both physical (awareness of the environment) and moral (sensitivity to immoralities in the community). Learning is related to memory and language. Humans think by manipulating verbal symbols. Communication is the basis for growth of civilization, family and social functioning, problem solving, and acquisition of new knowledge. The disorders of the intellect are kufr, shirk, junuun, jahal, and thought disorders (sterile argumentation, doubt, self-delusion, and conjecture).

 

9.4 MEMORY FUNCTIONS, dhhakirat, hifdh

Humans are capable of great memory but the capacity is not fully used. Short-term memory is recollection of recent events. Long-term is persistent recollection of distant events. Implicit memory is involved skills such as driving, eating, and drinking. There is a neurological basis for memory. Memory capacity can be enhanced by dua, strong motivation, and repetition. Memory can suffer from decay, distortion, confabulation, moral forgetting and physical forgetting. Shaitan is the cause of forgetting, moral and physical. Forgetting as a type of negligence cured by remembrance of Allah, dhikr Allah. Humans are not punished for forgetting. Reminding in a moral sense and the physical sense helps humans remember.

 

9.5 THE MOTIONAL FUNCTION

The qalb is the seat of emotions. Its emotional states can be expansion, inshiraah; stress, dhiiq; and calmness, tama'aninat. The basic animal drives are hunger, thirst, sex, self-protection & security, sociability, and inner promptings of the nafs. The food and sex drives are the strongest and both are necessary for survival of the human species. Humans have drives more and above the animal drives described above: honor, sharaf; altruism, iithhar, faith, iman, consciousness of Allah, taqwah, seeking the pleasure of Allah, ridhallah; seeking knowledge, talab al ‘ilm; appreciation of esthetic beauty, and self-actualization. Drives are inside and emotions are their external manifestations. Satisfaction of drives is associated with pleasant emotions. Dissatisfaction of drives is associated with unpleasant emotions. Drives cannot be denied or abolished but have to be controlled and channeled. Pleasant emotions are love, hope, elation, tranquility, mercifulness, and empathyUnpleasant emotions are fear, rage, aggression, enmity, hate, hamm & ghamm, sadness, despair, laziness, and jealousy. Stress is tightness of the chest, dhiiq al sadr and stressful life, maishat dhankat. The opposite of stress is inshiraah al sadr. Stress involves psychological stress, dhiiq nafsi. Stressful events are traumatic, uncontrollable, and unpredictable. It is part of human nature to be inpatient and thus when confronted by a problem that cannot be resolved quickly they become stressed. Life is full of difficulties, ‘usr. Allah helps those in difficulty. He causes difficulty to be removed by ease. Each difficulty, ‘usr, is accompanied by what makes it easy, yusr. Patience is called for in moments of difficulty. Psychological reactions to stress are anxiety, anger, aggression, apathy and depression, cognitive impairment. The physiological reaction to stress manifests as the usual signs of adrenaline releases. Long-term stress affects good health. Emotional immaturity is basically refusal to accept and deal with emotions in a balanced way. Emotional disorders lead to behavioral dysfunction and social dysfunction.

©Professor Omar Hasan Kasule, Sr. December, 2008

Darwin's theory of evolution is totally false.

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Man and Evolution

 
Out of all the natural phenomena with which we are a conversant, the living beings have a comparatively more complex and marvelous mechanism. It may be said that life is the apex of perfection on the scale of natural motion.
 

Life

No thinker belonging to any school of thought has any doubt about the fact that‑ living beings have characteristics which are not found in the non‑living beings.
 
The main' characteristics of a living being are self‑defense, adaptation to the environment, growth and pro­creation. The living beings of higher categories move from one place to another and those of still higher category are gifted with feeling and consciousness. That is why the laws of organic chemistry are different from those of inorganic chemistry, or for that matter of geology.
 
So far as observation and scientific experiments show, a living being is born only by another living being and not by lifeless matter. Similarly no living being is born suddenly and automatically. At the same time it also cannot be doubted that a living being appeared only at a special stage of the evolution of nature, which was naturally that of the beginning of life. Hence a question arises as to what is the origin of life?
 
In this respect various theories have been put forward. Some of them are as follows:
 
a. At first, life came to the earth from some other planet in the form of living cells.
 
b. The material necessary to form a living cell conse­quent on receiving the required energy under certain conditions, was accidentally transformed into a living being and from that life spread to the whole earth.
 
c. The first living being appeared suddenly by the will of God. Now all the developed living beings are His progeny.
 
d. Every species of the living beings appeared on the earth independently. Life to each one of them was granted by God. There are some other theories also.
 
We do not want to involve ourselves into the discussion as to which of these theories is correct, for a very extensive scientific investigation is necessary to come to a definite conclusion in this respect.
 
What we would like to point out is that the life of every living being, whether it is the result of any evolutionary process or not, is a sign of Allah. That is what has been emphasized by the Qur'an.
 
"There are significant signs in your own selves. Can you not see?"(Surah al‑Zariyat, 51:21).
 
"Allah sends down water from the sky and it brings the dead earth to life. Indeed in this there is a sign for those who pay attention" . (Surahal‑Nahl 16:65).
 

Manufacture of living cell

if one day the scientists succeed in manufacturing a living cell, the doctrine of those who believe in Allah will not be affected, just as the flight of man to other planets, the making of artificial rain, the grafting of one man's limbs to another, the manufacture of an electronic brain and so many other small and big inventions do not mean a clash or a rivalry with Allah. Such things only mean fructifying the human creative power and exploitation of natural material and its hidden forces. The Qur'an itself urges to make use of ideas and skills and to utilize the gifts of nature.
 
As we have repeatedly said, scientific progress is a move­ment in the direction of divine guidance and is not in conflict with it.
 
Anyhow, it should not be forgotten that human creativity does not mean the invention of a totally new phenomenon or a norm. It only means the exploitation of the material and energy available in nature and the bringing about of the conditions necessary for the utilization of the laws and norms relating to them.
 
If really there is a possibility of the production of life by combining natural material under certain conditions still not known to man, then he may in future discover the law of the origination of life and the conditions and norms pertaining to it. If that happens, this discovery will‑ not be different from the discovery and utilization of so many other laws already made in the fields other than that of life.
 
Obviously the discovery of a law and its utilization does not in any way lower the position of the law‑maker.
 
At a lower level we see that the pair of a male and a female pave the way for the birth of a child. But do they affect Allah as the creator? A farmer cultivates his land. But does he replace Allah as the real creator of the crop?
 
If it is discovered that life can be produced from matter under certain conditions, that will only mean that matter in its evolutionary motion can go to the extent where it receives life and then can go further to a higher stage.
 
It is interesting to note that the Qur'an, describing the birth of man, expressly says:
 
"One of His signs is that He created you o f clay" . (Surah al‑Rum, 30:20).
 
In fact clay becomes man, the highest living being, after passing through so many developments.
 
The Qur'an also talks of the birth of man from `black clay' and Mastic clay'. (Surah al‑Hijr, 15:28 and Surah al-­Saffat, 37:11).
 
It also says:
 
" We made every living thing o f water". (Surah al‑Anbiya, 21:30).
 
When the Qur'an has such a wide horizon, there is no reason why a Muslim who follows it, should be narrow-­minded.
 

Life, a Divine phenomenon

It may be pointed out that the Qur'an expressly ascribes life to Allah.

"It is He who created death and life" . (Surah al‑Mulk, 67:2). "It is He who created you to die". (Surah al‑Hajj, 22:66).
 
Do such verses mean that no one else can make a living being? In reply it may be said:

Firstly, the Qur'an ascribes to Allah all natural changes, from coming down of rain and taming rivers and mountains to the birth of a man.
 
On some other ‑occasions it ascribes these very changes to natural factors also. These two groups of verses are not contradictory, but corroborate each other, because the scientific laws which govern natural changes are simply the norms prescribed by Allah. His will does not mean that He directly brings about all changes and natural events. In fact he has created a system of natural changes. That is His will.
 
Secondly, if in the case of life we find that the Qur'an has given special attention to it, that is only a sign of its importance and high value. Allah describes it as the infusion of divine spirit. While discussing man, we will explain what is meant by that.
 
Thirdly, every evolutionary movement is a manifestation of Allah's will and His creative design, especially if the change is such that a material organism reaches a stage where it may receive life, become a living being and may at last attain human life.
 

Man and Evolution

The theory of evolution on the whole has a long history. Lamarck enunciated certain principles in this connection. But it was Charles Darwin, who carried out extensive studies of the living organisms and the way of their birth, and gathered enough scientific evidence to show that evolution has taken place actually. He held that:
 
(a) Every living being, wherever it may be, gradually adapts itself to its environment, and meets its natural needs, such as obtaining food and defending itself in accordance with the conditions prevailing in that environ­ment. This effort sometimes causes changes in its body, like the appearance of the web uniting the toes of the duck when it was forced by its environment to swim in order to look for its food in the lakes, or the lengthening of the neck of the giraffe when it was forced to make use of the branches of lofty trees.
 
(b) Though these organic changes take place gradually over many generations, they later pass from parents to offspring.
 
(c) Among the living beings there is a severe struggle for the continuation of their life, for procuring food and for selecting a suitable mate. This struggle for existence, that is a clash with the factors of the environment of life and rivalry with other living beings, is a firm principle in the life of the animals and the plants and is one of the factors which lead to the change of their form.
 
(d) As the result of this struggle only those organisms survive which can adapt themselves better to their environ­ment and can obtain the conditions necessary for their life in their natural abode. The weaker and the less suitable organisms gradually die out.
 
This way gradually the various species are transformed, and only the fittest ones among them survive. That is how the evolution of the species takes place.
 
The dissemination of the theory of the development of the living organisms, including man, on the basis of these principles, roused a great deal of controversy during the time of Darwin and afterwards, and views in support of it and against it were openly expressed. At some times the tone of the debate in this connection was scientific but on other occasions it was rooted in religious or anti‑religious prejudices, for it was said that what Darwin had asserted was in conflict with the Biblical account of the beginning of the world and the birth of man as given in the book of Genesis.
 
Anyhow, with new discoveries in archaeology and the expansion in the field of experiments, the theory of evolution has been considerably modified since the time of Darwin, especially in regard to the questions relating to anthropology.
 
Many new questions in regard to almost every principle mentioned by Darwin have arisen. For example, it is asked whether the appearance of a new organ or for that matter any other organic change, always results from the use of that organ and the attempt to adapt it to one's environment or it may be due to mutation or any other cause?
 
The acquired qualities are hereditable as a principle or genetic investigations have rejected this theory?
 
The organic changes, whatever may be their cause, are always aimed at survival and evolution or sometimes they may be due to the inconsistency with the environmental conditions and may culminate in death and extinction?
 
Natural selection is or is not like artificial selection which leads the existing generation to evolution? We find that the wild animals and plants are alike and of average type, whereas the artificial selection gives the animals and plants more variety and leads them to better evolution.
 
There are many other questions of this sort.
 
Anyhow, in spite of all the objections raised to discredit it, the theory of evolution has been accepted by the scientists as an objective principle of natural sciences. At the same time it is also certain that prominent and unbiased naturalists do not consider this theory to be final and incontrovertible. The way to further scientific investi­gation is not closed. All that they say is that the scientific inquiry has not so far discovered any new principles which may take the place of the principle of evolution.
 
Now it may be said that if an unbiased investigator care­fully examines the results of the observations in regard to the genesis of the living organisms, he will come to the following conclusions:
 

Principles which may be discovered

(1) The living organisms in accordance with their degree of evolution have a historical succession. In other words, the more developed species have usually appeared over history after the less developed ones.
 
(2) This historical succession is similar to that found in all other things of the world. The entire cosmos has evolved from a simple state and gradually galaxies. and solar systems have been formed in the environment devoid of all traces of life. Conditions conducive to the appearance of life have developed gradually. Similarly development has taken place successively from the plants to the developed animals. On the whole, the more complex organism have followed the simple ones.
 
(3) There exists complete organic similarity between the first living organism and the most developed living organism known to us.
 
(4) The stages through which a human embryo passes during its embryonic development are fully akin to the stages through which living organisms have passed over history.
 
When we put all this evidence together, we can scientifi­cally presume that the various species of the living organisms are the progeny of one another (transformism) and have not come into existence independently (fixism).
 

Scientific presumption, not incontrovertible principle

Anyhow, it would be fair to say that the conclusions at which we have arrived are no more than a scientific guess corroborated by some evidence. They cannot be regarded as decisive and final, for if an unbiased investigator looks carefully at the history of the origin of machinery, he will find that the development of various machines is not incongruous with the four conclusions mentioned above, though the origin of the machines was not on the basis of transformism in its modern sense, and the various kinds of machines have not been born of one another.
 
In fact the scientific study of the origin of machinery also leads to the following conclusions:
 
(1) The machines in accordance with their evolution have historical succession, for the more developed ones appeared after the less developed.
 
(2) This historical succession is akin to the origination of all other things of the cosmos.
 
(3) There is complete organic resemblance between the first machine and the most developed machine.
 
(4) The stages of the manufacture of the latest developed machine on the whole resemble those of the development of other machines, though in a compressed form.
 
In spite of all these four points, everybody knows that the origination of the more developed machines in the wake of the simple ones has not come about on the basis of transformism. In other words the more developed machines are not the progeny of the more simple ones.
 
The evolution of the machines is the result of man's initiative, his efficiency and the evolution of his thinking. It is the outcome of the experience he has gained. But the machines of superior kind are not born of those that existed before them.
 
It is true that in the case of machines basically it is not possible that a more developed one is born of a simpler one, but in the case of living beings such a possibility does exist. But this possibility can only support a scientific guess. It is no proof that such a thing has actually happened, for mere possibility of a thing is not a proof of its actual occurrence.
 
We come across some other cases of evolution, in which the historical succession of their stages is related to the evolution of the thinking of the maker, and is the result of the gradual increase in an already existing ability.
 
An example of such an evolution is the gradual attainment of knowledge from childhood to later years.
 
In contrast, the evolution of the power of learning a foreign language is connected with the development of the capability of him who learns it, and not with that of the person who teaches him.
 

Conclusion

An unbiased investigator, whether he supports the theory of evolution or opposes it, has to admit that:
(1) As far as we know, all the existing things of the world, including the living organisms, have a historical succession in accordance with the degree of their evolution.
 
(2) We are aware of many cases in which a more developed organism is the progeny of a less developed one.
 
(3) There are indications on the basis of which it may be presumed that this is a general rule applicable to all existing things.
 
(4) But still this is no more than a mere scientific guess, and the way to further investigation on the basis of contrary evidence, as mentioned above, is still open.
 
(5) On the basis of the doctrine, that the world has an Almighty Creator, who has brought the universe into existence and who manages it, there is a complete possibility that certain developed species might have come into existence independently in the same way as we have described the case of the machines. Of course, in this case the creation of the developed species is not to be the outcome of any mental development of the Creator or His gaining any experience. It is to be only on the basis that evolutionary motion exists in the creative design of the world. In other words, it is the will of Allah that gradually more and more developed species should come into being, in the same way as there exists an evolutionary motion in the development of an embryo.
 

Emergence of man

According to their general line of thinking, the scientists hold that man has evolved from the primates, which existed before him. We leave the study and evaluation of this evidence and other indications to the anthropologists, and confine ourselves to making a few general remarks in regard to the origin of man.
 
(1) What we have said about the theory of evolution is also applicable to what has been or is being said on the basis of this theory about the ancestors of the first man, but as we have already pointed out, this theory is no more than a scientific guess. It is still subject to further investi­gation and should not be considered to be one hundred per cent final.
 
(2) Anyhow, it is important to note that the emergence of man on the basis of evolution from other primates is not in conflict with the teachings of the revealed religions, especially with the belief of an Almighty Creator of the world. We have repeatedly mentioned in Islamic Teachings that Allah, as described by the Qur'an, is the Creator and Disposer of nature. Therefore the perfect system of nature is one of His signs and not an arrangement parallel to Him or negating Him. All the scientific discussions and efforts are aimed at only finding out this system of nature as it actually exists.
 
(3) The only point which has given rise to the conception that there is a contradiction between religion and the general principles of evolution is that the book of Genesis of Old Testament and certain verses of the Qur'an apparently indicate that all men existing on the earth are the progeny of Adam, who was created independently and not evolved from any previous living beings.
 
In this connection the following points are worth con­sideration:
 
(a) What, in this respect, is mentioned in the book of Genesis cannot be taken seriously from religious point of view, because the genuineness of many parts of Old Testament is historically doubtful.
 
(b) The Qur'anic verses connected with the birth of Adam generally emphasize the point that his birth was an important event and that Divine spirit was infused in his material body made of clay. This kind of birth may only be described as mutation.
 
Thus a being made of clay came into existence. He was destined to be the master of the earth and no other visible or invisible being could place a total restriction on his leaning towards Allah or towards his base desires.
 
(c) There is only one verse in the whole Qur'an which describes the birth of Adam as somewhat miraculous. This verse says:

"Surely Isa is like Adam in the sight of Allah. He created him of clay, then said to hire: `Be! and he was". (Surah Ale Imran, 3: 59)
 
This verse has come in the wake of other verses relating to the Prophet Isa. The Qur'an invariably stresses that Isa was created by Allah and that he was not His son. The fact that he was born of Virgin Maryam and had no father is no proof of his being the son of Allah. His birth was a super­natural event, which took place by Allah's will, in the same way as another supernatural event, that is the birth of Adam, the living being having Divine spirit, occurred earlier.
 
It may be observed that this very verse shows that the birth of Adam and that of Isa are alike.
 
Can anybody claim that what the Qur'an has said concerning the birth of Isa repudiates the general procedure of the birth of men all over history? Does it deny that they are normally born of father and mother. Not at all.
 
In dozens of verses the Qur'an declares the system of reproduction and procreation to be a sign of the power and the wisdom of the Creator of the cosmos.
 
Hence from the Qur'anic point of view the miraculous birth of Adam, the first living being gifted with Divine spirit, should not be construed to mean that the Qur'an is opposed to the theory of the emergence of the existing things of the world or the birth of living organisms on the basis of evolution. All that it means is that the emergence of man in an extraordinary way was a special favor of Allah.
 

Exceptional Organisms

Irrespective of all that relates to the birth of Isa or Adam, a naturalist may be asked whether it is possible or not that in the course of the emergence of usual organisms, some exceptional ones also come into existence?
 
We all know that as a rule every hand and foot of a man has five fingers; but we also know that some children are born with six.
 
Similarly we know that every human child is born with one head, but you must have read in newspapers that there have been some exceptional cases in which children were born with two heads.
 
When you put up such exceptional cases to the naturalists, they do not deny their existence, but explain them away simply as freaks of nature.
 
The credulous people easily accept this explanation, but those who have a critical mind ask: If it is true that the evolutionary emergence of the world and man is the result of the domination of the laws of nature over all the particles of this world and if these laws hold good everywhere, what is that factor which disturbs them?
 
Does an outside factor disturb the working of nature and the system of its laws, or the laws of nature themselves disturb their own working? In the first case, we must acknowledge that there exists some superpower trans­cending nature. In the case of the second alternative, a question arises as to why the possibility of the occurrence of some exceptional events, sometimes called miracles, should be so vehemently denied and considered to be contrary to the system of nature?
 
The above discussion shows that there is not the least contradiction between the general principle of evolution in respect of the world and man, and the teachings of the revealed religions, and what the Qur'an says concerning the birth of Adam and man. Incidentally the principles of evolution are still subject to further scientific investigation, for they are faced with much criticism especially as they were enunciated by Darwin.
 
As we have now finished the discussion of the origin of man, we take up a more basic question. The most impor­tant question, which is being overlooked in our times is: What is the true nature of man, what is his value and what way he should go?
 
First we refer briefly to the position of man in the West and then we propose to study the man of the Qur'an, so that keeping in mind the views of the contemporary schools, we may know the approach of Islam in this respect.
 

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