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physiology MCQs

Practise focused physiology questions with marked answers for exam preparation and subject revision.

physiology Mcqs
1. Surfactant is secreted by_____________?
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A. Goblet cells

B. Pnemocyte II

C. Pulmonary vessels

D. Pnemocyte I

2. Tetany is characterized by ________________?
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A. Increased serum calcium concentration

B. Hypotonicity of muscles

C. None of the above

D. Hypertonicity of muscles
3. Adrenaline used for controlling of bleeding during surgery may result in________________?
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A. Syncope

B. Drastic fall in blood pressure

C. Cardiac arrhythmias

D. Precipitation of allergic reaction

4. In which of the following diseases would you expect to find an increase in thickness of the respiratory membrane ?
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A. Skeletal abnormalities of the chest

B. Asthma

C. Emphysema

D. Pulmonary artery thrombosis

5. The catecholamines secreted by adrenal medulla______________?
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A. Are under the control of parasy

B. Decrease the level o free fatty acids and ketone bodies

C. Increases the blood glucose level by favoring glycogenolysis in blood and muscle cells

D. Increase the splanchnic blood flow

6. Which of the following does not stimulate alveolar hyperventilation ?
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A. Hypoxia

B. Stretching of airways

C. Hypercapnia

D. Acidosis

7. Small intestinal peristalsis is controlled by _______________?
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A. Myentric plexus

B. Vagus nerve

C. Meissners plexus

D. Parasympathetic

8. Osteoclasts are inhibited / modified and regulated by____________?
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A. Calcitonin

B. Parathyroid hormone

C. Tumor necrosis factor

D. 1,25 dihydroxycholecalciferols

9. All the following causes the secretion of gastric juice during cephalic phase EXCEPT______________?
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A. Food in the stomach

B. Sight of food

C. Food in the mouth

D. Thought of food

10. Cortisol levels are maximum during____________?
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A. Evening

B. Sleep

C. Have no change

D. Early morning
11. The intrapleural pressure at the end of deep inspiration is ______________?
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A. +4 mm Hg

B. -4 mm Hg

C. -18 mm Hg

D. #NAME?

12. Production of bile takes place in____________________?
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A. The gall bladder

B. Hepatic duct

C. Hepatocytes

D. Kupffer cells

13. The most important action of Secretin is to_____________?
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A. decrease gastric secretion

B. neutralize the acid from the stomach

C. increase secretion of bicarbonates by pancreas

D. Cause contraction of pyloric sphincter
14. Regarding myxedema the following are true except______________?
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A. Dullness, loss of memory

B. B.M.R increased by 30 -45%

C. Swollen, oedematous look of the face

D. Impotency, amenorrhea

15. Hypercalcemia associated with malignancy is most often mediated by _____________?
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A. Parathyroid hormone ( PTH)

B. Calcitonin

C. Parathyroid hormone related protein (PTHrP)

D. Interleukin 6 ( IL- 6)

16. Cephalic phase of gastric secretion can be demonstrated by the following experiment____________?
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A. Condition reflex

B. None of the above

C. Pavlovs pouch

D. Heidenhans pouch

17. Acromegaly is a disorder of____________?
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A. Excess FSH secretion

B. Excess thyroxine secretion

C. Excess ACTH secretion

D. Excess growth hormone secreting
18. Which is false regarding insulin______________?
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A. Causes lipogenesis

B. Secreted by beta cells

C. Promotes glycogenesis

D. Glycopeptide
19. Inhibit b hormone has effect on_______________?
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A. Spermatogenesis

B. Sertoli cells

C. FSH

D. Seminiferous tubules

20. Carbon monoxide poisoning causes_______________?
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A. Oxygen dissociation curve shifts to left

B. Cyanosis

C. Hypoxic hypoxia

D. Diffusion capacity of lungs decreases