DEPARTMENT OF HUMAN PHYSIOLOGY

 

OVERVIEW

Physiology deals with normal functions in the human body. It correlates anatomic, structure and biochemistry with specific functions and constitutes the Basis upon which pharmacology and pathology are founded.

Some of the most valuable contributions to medicine and the medical sciences have been the outcome of laboratory studies in physiology. The role physiology plays in throwing light upon disorders of function gives the student of medicine as well as the practitioner a vantage point from which to gain a rational view of pathological processes; hence physiology is the basis upon which scientific medicine is practiced. Medical Physiology now has applications, which reach beyond the direct realms of medicine.

 

There is now the discipline of biomedical engineering, which has its foundations and raison d’être in the applied physiology.

 

OBJECTIVES

            The course is designed to give an introduction to the physiological principles governing normal function of the human body and to indicate the objectives of this study. Thus, the factors, which determines the organization and integrative action of the system of the body will be analyzed and discussed. The objectives of the course are to;

1.       Indicates the core of physiological knowledge upon which medical practice is based.

2.       Indicate the experimental basis of this knowledge

3.       Relate basic knowledge to an understanding of common abnormalities;

4.       Use this basic knowledge to explain common pathological disturbances, especially failure of certain functions

5.       Use the description of these disturbances to reinforce basic knowledge

6.       Encourage the students to think of disease in terms of disturbance of function

 

TEACHING & LEARNING METHODS

 

Methods of teaching include lectures, some given via computer network using power point. Also practical and tutorials, to include seminars.

 

EVALUATION

 

Evaluation involves the use of multiple choice questions (MCQ) with the true-false items method.

 

200 LEVEL CLASS

 

First semester

MPY 221: INTRODUCTION TO PHYSIOLOGY (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and summarize functional organization of the human body.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Description and functional organization of the human body

-          cells as units of the body

-          internal environment

-          homeostatic mechanisms of the systems

-          regulatory systems of the body

 

The cells and its functions;

-          organization of the cells(structural)

-          functional systems of the cell

 

Transport Mechanism across the cell membrane

-          Diffusion

-          Active transport

-          Specialized transport phenomenon

 

Cell Genetics

-          protein synthesis

-          cell differentiation

-          cell reproduction

 

 

MPY 222 BLOOD AND BODY FLUIDS (2 CREDITS)

Course objective:
At the end of the course the student should be able to list and describe functions of blood and body fluids.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Red blood cells (Erythrocytes)

Erythropoeisis

Destruction of RBC

-          Anaemia

-          Polycythemias

 

White Blood Cells(Leukocytes)

-          General  Characteristics of  Leukocytes

-          WBC production

-          Properties of WBC

-          The reticuloendothelial system

-          Inflammation and functions of WBC

-          Leukaemias

 

Immunity and Allergy

-          Classification of immunity

-          Description of the process of immunity and allergy

-          Antigens/Antibodies

-          The Lymphoid tissues in immunity

-          Hypersensitivity reactions

-          Interferon

-          Allergies in the normal and the allergic

 

Blood Grouping Systems

-          Antigenicity and immune reactions of blood

-          ABO blood groups

-          Rhesus blood groups

-          Other Blood factors

-          Transfusion including transfusion reactions

-          Introduction to tissue and organ transplantation

 

Haemostasis  and  Blood coagulation

            Events in Haemostasis

-          Mechanism of Blood coagulation

-          Conversion prothrombin to thrombin

-          Conditions that cause excessive bleeding in humans

-          Thromboembolic conditions

-          Blood coagulation tests

 

Body Fluids

Capillary Dynamics and Fluid Exchange between the blood and Interstitial fluid

-          Blood flow in capillaries

-          Exchange of nutrients and other substances across the barriers

-          Distribution of fluid volumes

 

The lymphatic system and interstitial fluid dynamics;

            The lymphatic system

-          Control of interstitial fluid protein concentration

-          Mechanism of oedema formation

 

The special fluid system of the body

            CSF

            -Intra-ocular fluid

-Fluid circulation in other spaces e.g. pleural cavity

Pericardial cavity, peritoneal cavity, synovial cavities etc

 

Osmotic Equilibrium between ECF and ICF

-Total Body water

-Body fluid compartments

-Measurements of Body fluid volumes

-Constituents of ECF and ICF

Osmotic equilibrium and fluid shifts

Volume and Osmolality changes in ECF and ICF

Physiological Solutions-Clinical Uses/Replacement

MPY 223: EXCITABLE TISSUES  (1 CREDIT)

Course objective:
At the end of the course the student should be able to list and describe functions of excitable tissues such as nerves, muscles and excitable membranes.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Excitable membranes and Neuromuscular events

Genesis and conduction of action potentials

-          Nerves

-          Muscles

Synapses and transmitters

Synaptic excitation and inhibition

Reflexology

Sensory Receptors

 

MPY 224: CARDIOVASCULAR AND RESPIRATORY SYSTEMS (2 CREDIT)

Course objective:
At the end of the course the student should be able to list and describe the functions of the heart, circulatory and respiratory system.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

The heart as a pump;

-Physiology of cardiac muscles

-The cardiac cycle

Regulation of cardiac function

 

Rhythmic Excitation of the heart;

-The special excitability and conductive system of the heart

-Control of Excitation and conduction system of the heart

Abnormal rhythms of the heart.

 

The Normal Electrocardiogram;

-Characteristics of the normal ECG

-Methods of recording ECG

-Flow of current around the Heart

Electrocardiogram Leads

 

Electrocardiographic Interpretation in cardiac myopathies

-Principles of vectorial analyses of ECG

-Vectorial analysis in the normal ECG

The mean electrical axis of the ventricle

-Conditions that cause Abnormal voltage of the QRS complex

-Current of injury

 

Electrocardiographic  interpretation of cardiac arrhythmias

-Abnormal sinus rhythms

-Abnormal rhythms originating from impaired impulse transmission

-Premature beats

-Abnormal  rhythms due to circus movements

 

Physical principles of Blood;

-The circulatory system as a ”circuit”

-The physical characteristics of Blood

-Interrelationships between pressure, flow and Resistance

-Vascular Distensibility (Pressure – Volume curves)

-Circulatory filling pressure/pressure volume changes of the entire circulatory system

-Stress Relaxation of vessels

 

The Systemic Circulation

            -Physical characteristics of the systemic circulation

            -Pressure pulse in the arteries

            -The arterioles and capillaries

            -Vein and their functions

 

Local control of Blood Flow (Nerves and Humoral Regulation)

            -Local control at tissue level

            -Long-term local blood flow regulation

            -Nerves regulation of the circulation

            -Humoral regulation of the circulation

 

Regulation of Mean Arterial Pressure

            -Normal Arterial pressure

            -Relationship of arterial pressure to cardiac output and TPR

            -General Arterial Pressure Regulation

            -Nervous mechanisms for rapid arterial pressure control

            -Hormonal mechanisms for rapid arterial pressure control

            -Intermediate mechanisms for arterial pressure regulation

            -Short-term to Long-term mechanisms of pressure control

            -Renal mechanisms for arterial pressure  control

            -Hypertension (types, causes, mechanisms)

 

Cardiac output and venous return.

            -Regulation of cardiac output

            -Cardiac Output in abnormal conditions

            -Methods of measuring cardiac output

 

The Pulmonary Circulation

            -Physiologic anatomy of the pulmonary circulatory system

            -Pressures in the Pulmonary System

            -Blood Flow through the lung

            -Capillary Dynamics in the lungs

 

The Coronary Circulation

            -Normal coronary Blood flow

            -Control of coronary Blood flow

            -Pathophysiology of Ischaemic Heart Disease

 

Cardiac Failure

            -Dynamics of circulation in Cardiac Failure

            -High output cardiac failure

            -Cardiogenic shock

            -Mechanism of Oedema in cardiac failure

            -Physiological classification of cardiac failure

 

Heart Sounds

            -Normal Heart Sounds

            -Principles of auscultation

            -Phonocardiogram

            -Abnormalities of Heart Sounds

 

Circulatory Shock (Physiology and Management)

            -Physiological causes of shock

            -Haemorrhagic shock

            -Neurogenic shock

            -Anaphylactic shock

            -Septic shock

            -Traumatic shock

            -Effects of shock

            -Physiology of circulatory arrest

 

Muscle Blood flow/ other specific sites

            -Regulation of Blood flow through skeletal muscle

            -Cerebral circulation

            -Splanchnic circulation

            -Circulation in the skin

            -Physiology of vascular diseases of the limbs

 

 

Pulmonary ventilation

-Mechanism of Respiration

-Pulmonary volumes and capacities

The minute respiratory volume-RR,TV

--Alveolar ventilation

-Functions of Respiratory System

-Artificial Respiration

 

Physical principles of Gaseous Exchange

-The Physics of Gases

-Composition of Alveolar Air

-Diffusion of Gases through Respiratory membrane

 

Transport of Oxygen  and Carbon dioxide in the Blood and Body fluids

--Pressure Differences of Oxygen and CO2 from the lungs to the tissues

-Transport of oxygen in the blood

-Transport  of CO2 in the blood

-The Respiratory  Exchange Ratios

 

Regulation of Respiration

-The respiratory centre

-Humoral Regulation of Respiration

-          Basic mechanism of Humoral stimulation of the Respiratory centre

-          The chemoreceptor system for control of respiration

-          Regulation of Respiration during Exercise

-          Abnormalities of Respiratory control

 

Respiratory Insufficiency

-Methods for studying-Respiratory disorders

-Physiologic types of Respiratory insufficiency

-Physiologic peculiarities of specific pulmonary disorders

-Hypoxia

Hypercapnia

-Oxygen therapy

-Entrapped Air/its absorption

 

MPY 225:  EXPERIMENTAL PHYSIOLOGY (1 CREDIT)

 

Second semester

 

MPY 226:  THE GASTROINTESTINAL TRACT (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and describe gastrointestinal functions.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

G.I Mobility;

-General principles of Intestinal mobility

-Functional Types of movements in the GIT

-Ingestion of food (Mastication,Deglutition)

-Motor functions of the stomach

-Movement of the colon 

-Defecation

-Autonomic influences on bowels Activity

 

Secretory functions of the GIT;

General principles of G.I secretion

-secretion of saliva

-Oesophageal secretion

-Gastric secretion(characteristics and Regulation) 

-pancreatic secretion

-Biliary secretion

-Secretion of small intestine

-Secretions of the large intestine

 

Digestion and Absorption in the GIT

-Digestion of the various foods

-Basic principles of G.I Absorption

-Absorption in the small intestine

-Absorption in the large intestine

 

Physiology of Gastrointestinal Disorders;

-Disorders of swallowing

-          Disorders of the stomach

-          Disorders of the small intestine

-          Disorders of the large intestine

-          General disorders of the GIT

 

MPY 227: RENAL SYSTEM (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and describe the physiology of the renal system.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Formation of Urine;

·         Physiologic Anatomy of the kidney

·         Basic theory of Nephron Function

·         Renal Blood flow and pressure

·         Glomerular filtration/filtrate

·         Reabsorption  and secretion in the tubules

·         The concept of plasma clearance

·         Effect of Tubular load transfer maximum on urine constituents

 

Renal mechanisms for concentrating and Diluting the urine

·         The counter-current  mechanisms

·         Excretion of urine constituents

·         Fluid volume Excretion

·         Autoregulation of RBF and GRF

·         Intrarenal Function of the Renin-Anglotensin system

 

Renal Regulation of Blood Volume, ECF volume and ECF composition: control of Blood volume control of ECF volume

Control of ECF constituents

 

Acid-Base Balance:

·         function of Acid-Base Buffer

·         respiratory Regulation of Acid-Base Balance

·         renal regulation of Acid Hydrogen ion concentration

·         clinical abnormalities of Acid-Base Balance

 

Micturition/Renal Disease/Diuresis:

·         Physiologic Anatomy of the Bladder and its nervous connnections

·         Transport of urine through the ureters

·         The maturation reflex

·         Abnormalities of maturation

·         Renal Diseases (e,g, Renal failures, Hypertensive kidney diseases, Nephrotic syndrome, tabular disorders)

·         Renal function tests

·         Diuretics and their mechanism of Actions

 

MPY 228:  ENDOCRINOLOGY (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and describe the functions of hormones and growth factors.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Introduction:

-          Nature of a Hormone (including classification)

-          Mechanisms of Hormonal Action

-          Interacellular Hormonal Mediators

-          Actions of steroid Hormones

-          The pituitary Gland, the Hypothalamus

-          The adenohypophysis and its Regulation

-          The posterior pituitary Gland/Hormones

 

The Thyroid Hormones:

-          Formation and secretion of the Thyroid Hormones

-          Functions of the Thyroid Hormone Secretion

-          Interrelationship of the Thyroid Gland and other Endocrine Glands

-          Diseases of the Thyroid

 

Adrenocortical Hormones:

-          Functions of the mineralocorticords

-          Functions of the Clucocordicords

-          Chemistry of Adrenocortical secretion

-          The Adrenal Androgens

-          Abnormalities of Adrenocortical Secretion.

 

Insulin Glucagon and Diabetes Mellitus:

-          Effect of Insulin on Carbohydrate Metabolism

-          Glucagon and its funcrions

-          Regulation of Blood glucose concentration

-          Diabetes Mellitus

-          Hyperinsulinism

 

Parathyroid Hormone, Calcitonin:

-          Calcium and phosphate in the ECF and plasma

-          Function of Vitamin d

-          Bone and its relationships with Extracellular calcium and phosphates

-          Parathyroid Hormone

-          Calcitonin

-          Control of calcium ion concentration

-          Physiology of parathyroid and Bone Disease

-          Physiology of the Teeth.

 

MPY 229: REPRODUCTION (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and describe human reproductive functions.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Reproductive Functions of the male and the male sex Hormones

-          Spermatogenesis

-          The male sexual Acts

-          Testosterone and other male sex Hormone

-          Abnormalities of male sexual functions

Sexual Functions in the Female and the Female Hormones:

-          Physiologic Anatomy of the female sexual organs

-          The female Hormonal system

-          The monthly, ovarian cycle and the function the Gonadotropic Hormones

-          Regulation of female monthly Rhythm

-          Interrelationship of the ovaries with other Glands

-          Abnormalities of secretion by the ovaries

-          The female sexual Act/Fertility

 

Pregnancy and Lactation:

-          Maturation of the ovum and oogenesis

-          Fertilization of the ovum/implantation

-          Early intrauterine Nutrition of the Embryo

-          Function of  tile placenta

-          Hormonal factors in pregnancy

-          Response of the mother to pregnancy

-          Abnormal Responses of the mother to pregnancy

-          Parturition

-          Lactation

 

Special features of foetal and Neonatal Physiology:

-          Growth and functional development of the foetus

-          Infant Adaptation to extra uterine life

-          Special problems of prematurity

-          Special functional problem of the Neonate

-          Growth and Development of the child.

 

MPY 230: EXPERIMENTAL PHYSIOLOGY (1 CREDIT)

 

 

300 LEVEL CLASS

 

 

First semester

 

MPY 321: THE NERVOUS SYSTEM (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and describe functions of the nervous system.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

 (A) C.N.S.

Organisation of the Nervous System

General design of the Nervous system

The Three major levels of nervous system function

Comparison of the Nervous system with an Electronic computer Neuronal synapses

 

Transmission and processing of information in the Nervous system:

-          Information signals and impulse

-          Transmission of signals in Nerve tracts

-          Transmission and processing of signals in Neuronal pools

-          Instability and stability of Neuronal circuits

Sensory Receptors:

-          Types of sensory receptors

-          Transaction of sensory stimuli into  Nervous impulses

-          Physiologic classification of Nerve fibres

Somatic Sensations:

-          Classification of somatic sensation

-          Detection and transmission of Tactile sensations

-          Transmission of mechanoreceptive sensations

-          Transmission Dorsal column pathway

-          Transmission in the spinothalamic system

-          Qualities of pain

-          Methods of measuring pain

-          Pain Receptors

-          The reaction of pain

-          Referred pain

-          Visceral pain

-          Headache

-          Thermal sensations

-          Clinical abnormalities of pains

 

Motor functions of the spinal cord/cord Reflex:

-          Organisation of the spinal cord for motor functions

-          Role of muscle spindle in motor control

-          Reflexes (e.g. tendon, flexor, extensor, fatigue, etc)

-          Autonomic Reflexes in the spinal cord

-          Spinal cord Transaction/Spinal shock.

 

Motor functions of the Brain stem and Basal Ganglia:

-          The Reticular formation, and support of the body against gravity

-          Vestibular system and maintenance of equilibrium

-          Functions of the Reticular formation

-          Motor functions of the Basal Ganglia

-          Clinical Application of cord and Brain stem Reflexes in man.

 

Cortical Cerebellar Control of  Motor Functions:

-          Physiologic Anatomy of the Motor Areas of the cortex and their pathway to the cord

-          The cerebellum and its motor functions

-          Sensory feedback control of motor functions

-          Initiation of voluntary motor activity

 

The Reticular Activating System:

-          Function of the RAS in wakefulness

-          Diffuse thalamocortical system

-          Attention

-          Brain waves

-          Wakefulness and sleep

 

The Cerebral Cortex:

-          Physiologic anatomy of the cerebral cortex

-          Functions of specific cortical areas

-          Thought, Learning and consciousness, including memory

-          Functions of the Brain in communication

-          Functions of the corpus callosum

 

The Limbic System:

-          Vegetative functions of the Hypothalamus

-          The role of Reticular formation and Behavioural functions

(B) A.N.S.

General Organisation of the Autonomic Nervous system

-          Physiologic Anatomy of the sympathetic nervous system

-          Physiologic Anatomy of the parasympathetic nervous system.

Basic Characteristics and sympathetic and parasympathetic Functions:

-          Cholinergic and Adrenergic fibres

-          Receptor substances

-          Excitation and inhibition

-          Effect of ANS on specific organs

-          Effect  of enervation on ANS

The Autonomic Reflexes:

-          Discharge patterns in sympathetic/parasympathetic systems

-          Alarm or “Stress” functions of the sympathetic nervous system

-          Control of ANS

Basic Pharmacology of the ANS:

-          Adrenergic drugs/agents

-          Cholinergic drug/agents

-          Nicotinic drugs/agents

 

MPY 322: NUTRITION AND METABOLISM (1 CREDIT)

Course objective:

At the end of the course the student should be able to list and describe metabolism of nutrients

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Metabolism of Carbohydrate and formation of ATP:

-          Release of energy from food and the concept of “Free Energy”

-          Role of ATP in Metabolism

-          Transport of monosaccharides through the cell membrane

-          Glycogen storage in liver and muscle

-          Release of Energy from the Glucose molecule (e.g. Glycolytic pathway; phosphogluconate pathway)

-          Gluconeogensis

-          Blood Glucose

Lipid Metabolism:

- Transport of lipids in the Blood

- Free fatly acid

- Fat deposits

- Use of triglycerides for energy and ATP formation

- Regulation of Energy Release from Triglycerides

- Phospholips and cholesterol

Protein Metabolism:

-          Basic properties of proteins including the physical characteristics

-          Transport and storage of Amino Acids

-          The plasume proteins

-          Protein synthesis

-          Use of proteins for energy

-          Hormonal Regulation of protein metabolism.

The Liver and Biliary System:

-          Physiologic Anatomy of the liver

-          Secretion of Bile and functions of the Billiard tree (including the physiologic anatomy of the Biliary secretion)

-          Metabolic functions of the liver.

Energetic and Metabolic Rate:

-          Importance of ATP in metabolism

-          Control of Energy Release in the cell

-          The metabolic Rate (including its measurement)

Dietary Balances (Regulation of Feeding)

-          Dietary Balances

-          Regulation of Food Intake

-          Obesity/Inanition

-          Starvation.

Vitamins and Mineral Metabolism:

-          Classification of Vitamins

-          Specific vitamins (sources, action, regulation) i.e.

-          Mineral metabolism.

 

MPY 323: SPECIAL SENSES (1 CREDIT)

Course objective:
At the end of the course the student should be able to list and describe functions of special senses.

 

Teaching & Learning Methods:

Lectures, tutorials

Problem based learning.

 

Evaluation

MCQ (True-False items, Essay, Practical)

 

Content

Optics of Vision:

-          Physical principles of optics

-          The optics of the eye

-          Optical instruments.

Receptor and functions of the Retina:

-          Anatomy and function of the Retina

-          Photochemistry of vision

-          Colour vision

 

The Neurophysiology of Vision

-          The visual pathway

-          Neutral function of the retina

-          Function of the lateral geniculate body

-          Function of the primary visual cortex

-          The fields of vision

-          Eye movements and their control

-          Autonomic control of Accommodation and papillary Aperture.

 

The Sense of Hearing:

-          The tympanic membrane and the auricular system

-          The cochlea – physiologic Anatomy and sound wave transmission, function of organs of cortex

-          Central Auditory mechanisms

-          Hearing impairments

 

The Chemical senses – Taste and Smell:

-          The sense of Taste (sensations, Taste buds, taste pathway)

-          The sense of smell (olfactory membrane/cells, olfactory pathway)

 

MPY 324: EXPERIMENTAL PHYSIOLOGY (1 CREDIT)

CLD 324: CLINICAL DEMONSTRATIONS (1 CREDIT)

 

CLINICAL DEMONSTRATION – CDL 324:

  1. Hernias – inguinal, femoral, epigastric, incisional, lumbar
  2. Clubfoot, syndactyly, clerft lip/palate
  3. Goitre
  4. Breast diseases
  5. Long bone fractures
  6. Parkinsonism
  7. CVAs
  8. Ascites
  9. Bleeding diathesis
  10. Foetopelvic disproportion
  11. IUD
  12. Multiple pregnancy
  13. Sickle Cell Disease
  14. Downs syndrome
  15. Myasthenia Gravis

 

MPY 325: BASIC RESEARCH METHODOLOGIES AND ETHICS IN PHYSIOLOGY (1 CREDIT)