physiology MCQs – Page 3

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

physiology Mcqs
41. Normal intrapleural pressure during the start of inspiration is _________ mm of Hg?
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A. -5

B. 0

C. -7

D. -2
42. Oxygen dissociation curve shifts to the right by all of the following except_____________?
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A. Rise in pH

B. Rise in H+ ion

C. Rise in temperature

D. Rise in carbon dioxide tension

43. IN the adrenal gland, androgens are produced by the cells in the____________?
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A. Zona glomerulosa

B. Medulla

C. Zona reticularis

D. Zona fasciculata

44. The work of breathing__________________?
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A. decreased in lying posture

B. is not affected by respiratory

C. is inversely related to lung compliance

D. remains constant during exercise

45. The most significant immediate result of lowered serum calcium is_______________?
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A. Decalcification of bones

B. Weakened heart action

C. Hyperirritability of nerves and muscles

D. Decalcification of teeth

46. Steroid hormones are believed to enter target cells via_______________?
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A. Carrier mediated endocytosis

B. Facilitated diffusion

C. Simple diffusion

D. Cholesterol lined pores in the plasma membrane

47. which of the following secretions has a very high pH________________?
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A. Saliva

B. Pancreatic juice

C. Bile in gall bladder

D. Gastric juice

48. Vital capacity is a measure of________________?
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A. Expiratory reserve volume plus reserve volume

B. Tidal volume

C. Inspiratory reserve volume plus expiratory volume

D. Tidal volume plus inspiratory reserve volume plus expiratory reserve volume
49. Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT_______________?
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A. Increased concentration of oxygen

B. Increased 2,3 BPG

C. Increased temperature

D. Increased concentration of carbon di oxide

50. Changes in biological activity occurring daily are referred as _________ rhythm?
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A. Circa sestin

B. Circannual

C. Circa triginatan

D. Circadian
51. Secretin does not cause _______________?
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A. Bicarbonate secretion

B. Gastric secretion increase

C. Contraction of pyloric sphincter

D. Augments the action of CCK

52. Which of the following hormones does not affect growth ?
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A. Thyroid hormone

B. Oxytocin

C. Somatotropins

D. Estrogen

53. Oxytocin causes all accept_______________?
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A. Milk ejection

B. Myoepithelial cell contraction

C. Lactogenesis

D. Contraction of uterine muscle

54. Human chorionic gonadotrophin hormone ( HCG)______________?
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A. Production is greatest in the last three months of pregnancy

B. Acts on the uterus to maintain integrity of endometrium in early pregnancy

C. Can be identified in the urine of pregnant women by immunological technique

D. Is a steroid hormone

55. Noradrenaline is differentiated from adrenaline by increasing___________?
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A. Peripheral resistance

B. Heart rate

C. Cardiac output

D. All of the above

56. Paneth cells secrete which of the following ?
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A. Secretin

B. Maltase

C. Lipase

D. Antibacterial substance
57. All of the following are adverse effects of long- term corticosteroids EXCEPT____________?
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A. Psychosis

B. Peptic ulcers

C. Hypoglycemia

D. Osteoporosis

58. Glucose tolerance test is usually done to assess_____________?
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A. Endocrine Dysfunction of Pancreas

B. Acute Pancreatitis

C. Acinar Function of the Pancreas

D. Carcinoma of Head of Pancreas

59. The volume of gas in the lungs at the end of normal expiration is____________?
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A. Functional residual capacity

B. Residual volume

C. Inspiratory reserve volume

D. Expiratory reserve volume

60. Bile color is due to_____________?
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A. 5 mercaptan purine

B. Bilirubin

C. Globulin

D. Creatinine