Name: Human Physiology
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IGNOU MBCE-13 (January 2025 – December 2025) Assignment Questions

1. Define thermoregulation and explain its importance in maintaining homeostasis in the human body.

2. Write short notes on the following:

i. Differentiate between the four primary types of tissues: epithelial, connective, muscle, and nervous tissue. Provide examples of each.

ii. Discuss the structure and function of epithelial tissues. How are they classified based on layers and cell shape?

3. What are the main components of a homeostatic control system? Discuss how feedback mechanisms contribute to maintaining homeostasis.

4. Describe the physiological responses involved in thermoregulation during exposure to cold and heat stress.

5. i. Explain the process of gas exchange in the respiratory system. How do oxygen and carbon dioxide diffuse between the lungs and blood?

ii. Discuss the impact of the Bohr effect on oxygen transport in the blood. How does it facilitate oxygen delivery to tissues during exercise?

6. Explain the structure and function of the heart as a blood pump. Include a description of its chambers, valves, and layers.

7. Discuss the components and significance of the cardiac conduction system, including the roles of the SA node, AV node, and Purkinje fibers.

8. Discuss the process of hematopoiesis and the regulation of blood volume. How is erythropoiesis controlled by erythropoietin?

9. Describe the ABO and Rh blood group systems.

10. Explain the mechanism of blood clotting, detailing the intrinsic, extrinsic, and common pathways, and the role of thrombin and fibrin.

Note: Draw the figures/flowcharts/tables wherever required.

IGNOU MBCE-13 (January 2024 – December 2024) Assignment Questions

1. A) Describe the significance of intercellular junctions with suitable examples.
B) Define the term collagens. Explain the structural difference between various types of collagens with suitable examples.

2. Write short notes on the following:

i. Role of hypothalamus in thermoregulation
ii. Compare and contrast negative and positive feedback mechanisms with special reference to homeostasis.

3. With the help of neatly labeled diagrams explain the mechanism of gas exchange (external and internal respiration).

4. Discuss the significance of various digestive secretions (glands, segments of GI tract, and stomach) with relevant examples.

5. A. Write a detailed note on urine formation with suitable diagrams.
B. Explain metabolic acidosis and alkalosis.

6. (a) Explain the physiological significance of heart with suitable diagram.
(b) Describe the Conduction system of the heart.

7. (a) Discuss the hematopoietic process.
b) Discuss the role of kidney in regulation of blood volume.

8. Explain the following:

i) Role of vitamin K in blood coagulation
ii) Extracellular fluid
iii) Neurotransmitters
iv) Smooth Muscle cells

9. (a) Discuss the structure and functions of neurons with suitable diagram.
b) Explain the microscopic organization of sarcomeres.

10. Write short notes on the following:

(a) Excitation-Contraction (EC) coupling in skeletal muscle.
(b) Nerve membrane potential

MBCE-13 Assignments Details

University	:	IGNOU (Indira Gandhi National Open University)
Title	:	Human Physiology
Language(s)	:	English
Code	:	MBCE-13
Degree	:	MSCBCH
Subject	:	Biochemistry
Course	:	Core Courses (CC)
Author	:	Gullybaba.com Panel
Publisher	:	Gullybaba Publishing House Pvt. Ltd.