physiology MCQs – Page 2

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

physiology Mcqs

21. Endocrine glands that are not influenced by the pituitary gland include the____________?
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A. Pancreas, adrenal medulla and thyroid gland

B. Adrenal cortex, parathyroids and ovaries

C. Adrenal medulla, parathyroids, and the islets of langerhans

D. Thyroid gland, testes , and adrenal medulla

22. Contraceptive action of combined pill is mainly due to_______________?
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A. Prevents the implantation of fertilized egg

B. Decrease in tubal motility

C. Inhibits ovulation

D. Prevents the fertilization

23. A child with stunted growth with a stuffed belly, and short stature with mental retardation is suffering from the deficiency of which of the following______________?
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A. Parathyroid

B. Growth hormone

C. Rickets

D. Thyroxine

24. Fertilized ovum usually gets attached to the uterus wall in ____________?
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A. 28 days

B. 14 days

C. 1 week

D. 8 weeks

25. The primary site of action of antidiuretic hormone is on the_______________?
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A. Osmoreceptors in the hypothalamus

B. Afferent arterioles of the glomeruli

C. Thirst center in the hypothalamus

D. Distal tubules and collecting ducts in the kidney

26. Due fear which of the following hormones increases rapidly _______________?
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A. Epinephrine

B. Thyroid hormone

C. Corticosteroid

D. Growth hormones

27. The hormone whose deficiency causes diabetes insipidus is released from which nucleus of pituitary ________________?
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A. Suprachiasmatic

B. Pre optic

C. Paraventricular

D. Supraoptic

28. Inability of exchange of oxygen through lung tissue if known as____________?
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A. Ischemic hypoxia

B. Anoxic anoxia

C. Histotoxic hypoxia

D. Anoxia

29. In children, hypothyroidism causes_____________?
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A. Gigantism

B. Myxodedema

C. Cretinism

D. Acromegaly

30. Low calcium level will cause_____________?
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A. Tetanus

B. All of the above

C. Hyper excitability of wrist muscle

D. Weak heart action

31. The primary effect of calcitonin is__________________?
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A. Increases intestinal absorption of calcium

B. Bone resorption

C. Decreases intestinal absorption of calcium

D. Bone deposition

32. Gastric secretion is stimulated by all the following except_____________?
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A. Gastrin

B. Vagal stimulus

C. Secretin

D. Gastric distension

33. Secretin is secreted by_____________?
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A. Pancreas

B. Duodenum

C. Stomach

D. Liver

34. A child is below the third percentile for height. Growth velocity is normal, but chronologic age is more than skeletal age. The most likely diagnosis is______________?
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A. Primordial dwarfism

B. Constitutional delay in growth

C. Genetic short stature

D. Hypopituitarism

35. Vasopressin is synthesized in the_____________?
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A. Juxtaglomerular apparatus

B. Hypothalamus

C. Vasomotor center

D. Anterior pituitary

36. Blood coagulation is impaired in___________?
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A. Rickets

B. Hyperparathyrodism

C. Tetany

D. None

37. The quantity of water lost in expired air each 24 hrs is about___________?
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A. 600 ML

B. 200 ML

C. 400 ML

D. 800 ML

38. Arterial PO2 is reduced in_____________?
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A. KCN poisoning

B. CO poisoning

C. Pulmonary hypoventilation

D. Anemia

39. In Haldane effect CO2 dissociation curve is shifted to_____________?
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A. Right

B. Left

C. None of the above

D. Does not shift

40. Posterior pituitary insufficiency leads to______________?
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A. Cretinism

B. Diabetes insipidus

C. Dwarfism

D. Diabetes mellitus

Showing 21 to 40 of 522 mcqs