3 - physiology mcqs - 21 to 30

21) Somatostatin is Secreted by

a. Alpha cells

b. Beta cells

c. D cells

d. None of the above

Answer : (c ) D Cells

Reference: Ganong 22^nd Edition Page 333

22) Cholagogues Cause

a. contraction of Gall bladder

b. Increases in secretion of bile

c. Both

d. None

Answer : (A) Contract of Gall Bladder

Reference: Ganong 22^nd Edition Page 503

Choleretics cause increase in secretion of bile

23) Partial Pressure of CO2 in atmospheric air

a. 760 mm Hg

b. 159 mm Hg

c. 0.3 mm Hg

d. 600 mm Hg

Answer : c) o.3 mm Hg

Reference: Ganong 22^nd Edition Page 647

24) Right ventricular pressure in systole

a. 0 mm Hg

b. 25 mm Hg

c. 80 mm Hg

d. 120 mm Hg

Answer : b) 25 mm Hg

Reference: Ganong 22^nd Edition Page 567

25) The amount of Blood volume in capillaries is

a. 1 %

b. 5 %

c. 10 %

d. 20 %

Answer : c) 5 %

Reference: Ganong 22^nd Edition Page 590

26) Abnormal rhythm is produced by

a. SA Node

b. AV Node

c. Purkinje

d. ectopics

Answer : D) Ectopics

Reference: Ganong 22^nd Edition Page 556

27) RMP of a nerve of is maintained by

a. Sodium channels

b. Chloride channels

c. Potassium channels

d. Calcium channels

Answer : c) Potaasium Channels

Reference: Ganong 22^nd Edition Page 59

28) opening of which channel leads to Repolarisation of muscle

a. Calcium

b. Potassium

c. Sodium

d. Chloride

Answer : a) Calcium

Reference: Ganong 22^nd Edition Page 71

29) Endogenous opiod receptors for Endorphin and enkephalin are present in all of the following thereby blunting the pain except

a. hypothalamus

b. large intestine

c. liver

d. Substantia gelatinosa rolando

Answer : c) Liver

Reference: Ganong 22^nd Edition Page 113

30) Myosin is involved in

a. Muscle Contraction

b. Conduction of nerve impulse

c. Secretion of Insulin

d. None of the above

Answer : A) Muscle Contraction

Reference: Ganong 22^nd Edition Page 65