Zool 415: Animal Physiology Question Paper
Zool 415: Animal Physiology
Course:Bachelor Of Science In Education Science
Institution: Kabarak University question papers
Exam Year:2010
KABARAK UNIVERSITY UNIVERSITY EXAMINATIONS
2010/2011 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF SCIENCE IN
EDUCATION SCIENCE
COURSE CODE: ZOOL 415
COURSE TITLE: ANIMAL PHYSIOLOGY
STREAM: Y4 S1
DAY: FRIDAY
TIME: 9.00 – 11.00 A.M
DATE: 26/11/2010
INSTRUCTIONS:
1. Answer ALL questions in section A (40 MARKS)
2. Answer TWO questions in section B only (30 marks)
SECTION A: ANSWER ALL QUESTIONS (40 MARKS)
1. a) State the functional differentiate between the following terms:
i) Pharynx and larynx
ii) Tunica interna and tunica externa
iii) Homeostasis and hemostasis (6 marks)
b) Explain briefly the meaning of the following terms:
i) Fever ii) Open circulatory system (4 marks)
2. a) List five differences between veins and arteries. (5 marks)
b) Write short notes on:
i) Electrolyte balance in marine vertebrates
ii) Cold hardiness in animals living in polar regions. (5 marks)
3. a) Give the chemical composition and function of the following fluids:
i) Saliva ii) Bile (8 marks)
b) Describe the digestive role of the following:
i) Duodenum
ii) Stomach (7 marks)
c) Explain the process of absorption of the following nutrients in mammals:
i) Iron ii) Fats (5 marks)
SECTION B: ANSWER TWO QUESTIONS ONLY (30 MARKS)
4. a) In an experiment, the following values were obtained: end diastolic volume =
80mL; end systolic volume = 20mL; heart rate = 60bpm; total lung capacity = 4.5
L; tidal volume = 0.8L; residual volume = 1L; and expiratory reserve volume =
0.5L. Calculate:
i) Stroke volume; ii) Cardiac output;
iii) Vital capacity; iv) Inspiratory reserve volume. (6 marks)
b) State six functions of respiratory system in higher animals. (6 marks)
c) Explain briefly factors that influence dissociation of oxygen from haemoglobin.
(3 marks)
5. a) Assume that one ventricle of a child’s heart has an EDV of 90mL, and ESV of
60mL, and CO of 2.55L/min. Calculate the stroke volume and the heart rate.
(4 marks)
b) Use a sketch to illustrate the flow of blood through mammalian heart.
(5 marks)
c) Explain briefly five mechanisms that aid in venous flow of blood back
to the heart. (6 marks)
6. a) Draw a well labeled diagram of nephron of mammalian kidney. (4 marks)
b) Describe the role of mammalian kidney in water and electrolyte homeostasis.
(5 marks)
c) When animal body temperature is below set point, it is restored by behavioural
and physiological responses. Explain. (6 marks)
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