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Afb 3121: Human Physiology Question Paper

Afb 3121: Human Physiology

Course:Bachelor Of Science In Food Security

Institution: Jaramogi Oginga Odinga University Of Science And Technology question papers

Exam Year:2014

JARAMOGI OGINGA ODINGA UNIVERSITY OF SCIENCE AND TECHNOLOGY
SCHOOL OF AGRICULTURAL AND FOOD SCIENCES
THIRD YEAR FIRST SEMESTER EXAMINATIONS FOR THE DEGREE OF
BACHELOR OF SCIENCE IN FOOD SECURITY - 2013/2014 ACADEMIC YEAR
AFB 3121: HUMAN PHYSIOLOGY
Instructions:
1. This paper consists of TWO sections, A and B.
2. Answer ALL questions from section A and any TWO from section B.
3. Write all answers in the booklet provided.
2
SECTION A [30 MARKS]

Answer ALL questions
.
1. (a) Describe the relationship between amounts of calcium, bone and water in the human body.[4marks]
(b) Explain the following levels of organization of the human body.

i) Cellular level [1mark]
ii) Chemical level [1mark]
iii) Tissue level. [1mark]

(c) Briefly explain the different divisions of the peripheral nervous system.[3marks]

2. (a) Explain what causes the striations that are seen in skeletal muscles when viewed under microscope. [4 marks]

(b) Describe briefly the defecation reflex. [3marks]

(c) Differentiate between plasma and serum. [3marks]

3. (a) Give two main functions of the conducting portion of the respiratory system. [3marks]

(b) Define the following:
i) Minute ventilation [1mark]
ii) Inspiratory reserve volume [1 mark]
iii) Tidal volume [1mark]

(c) Explain the role of lungs in acid-base balance.[4marks]

SECTION B [40 MARKS]

Answer ANY TWO questions.

4. (a) With aid of diagram, describe structure of kidney nephron. [10marks]

(b) Give the three processes that take place in the nephron and which are important in urine formation. Name two hormones that affect kidney function and indicate their target areas.[10marks]

5. Describe in detail the digestive process of starch and protein in the human body. [20marks]

6. (a) Outline the effects of insulin in the following tissues:
i) Adipose
ii) Skeletal muscle
iii) Liver[10marks]

(b) Describe the functions of thyroid hormones. [10marks]

7. Describe the general functions of blood. [20marks]

Afb 3121: Human Physiology Question Paper

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