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10. A person was found to pass out large volumes of dilute urine frequently. Name the
(a) Diseases the person was suffering from (1 marks)
(b) Hormone that was deficient (1 mark)
11. State the importance of osmoregulation in organisms ( 2 marks)
12. What happens to excess fatty acids and glycerol in the body? (2 marks)
13. Give reasons for each of the followingÂ
(a) Constant body temperature is maintained in mammals ( 1 mark)
(b) Low blood sugar level is harmful to the body ( 2 marks)
14. The temperature of a person taken before during and after taking a cold bath. The results are shown in the graph
(a) Explain why the temperature fell during the bath ( 2 marks)
(b) What changes appeared in the skin that enabled the body temperature to return toÂ
normal. (2 marks)
15. (a) Name the fluid that is produced by sebaceous glands (1 mark)
(b) What is the role of sweat on the human skin? ( 2 marks)
16. State the role of insulin in the human body? ( 1 mark)
17. Describe how the human kidney functions. ( 20 marks)
18. (a) What is the meaning of the following terms:
(i) Homeostasis ( 1 mark)
(ii) Osmoregulation ( 1 mark)
19. (a) Explain what happens to excess amino acids in the liver of humans.
( 3 marks)
(b) Which portions of the human nephrons are only found in the cortex?
( 3 marks)
(c) (i) What would happen if a person produced less antidiuretic hormone?
( 1 mark)
(ii) What term is given to the condition described in (c) (i) above?
( 1 mark)
20. Define the following terms
(a) Excretion
(b) Secretion
(c) Egestion ( 3 marks)
21. Name the components of blood that do not enter the renal tubule in mammals
SCIENCE
HEALTH SCIENCE
NURSING
