Our collection of physiology MCQs is meticulously designed to reinforce the conceptual understanding of various topics in biology. Covering a broad spectrum, our Human Physiology MCQs with answers delve into multiple concepts, including human digestion, the nervous system, human reproduction, body fluids and circulation, breathing and gas exchange, the renal system, respiratory system, GIT and liver, endocrinology, locomotion and movement in human sense organs, reflex actions, spinal nerves, physiology of urine formation, insulin physiology, and more. These carefully selected topics are sourced from reputable and authoritative physiology reference books. Our physiology MCQs with answers serve as invaluable resources for individuals preparing for interviews, entrance exams, competitive assessments, and certifications, catering to experienced professionals, newcomers, and students alike. Additionally, explore our MCQs on Pharmacology for further study.

31. Formation of a small volume of concentrated urine in dehydration is associated with____________?

A. More reabsorption in the PCT
B. More concentration in loop of Henle
C. More reabsorption of DCT and collecting ducts
D. All of these

32. The glomerular filtration rate of the human kidney may be determined by measuring the plasma clearance of______________?

A. PAH
B. Urea
C. Inulin
D. Glucose

33. The kidney secrete all of the following hormones except_____________?

A. Renin
B. Erythropoietin
C. Vasopressin
D. 1,2,5 Dihydroxy cholecalciferol

34. Carbonic anhydrase in the kidney tubular cells is known to be associated with_____________?

A. Urea
B. Chloride
C. Bicarbonate ion
D. Carbohydrate

35. In osmotic diuresis there is_______________?

A. Increase in renal blood flow
B. Increase in glomerular filtration rate
C. Increase in NaCl concentration in urine
D. Decrease in reabsorption of Na Cl

36. Tubular maximum for glucose is_____________?

A. 180 mg/dl
B. 325 mg/dl
C. 375 mg/dl
D. 375 mg/dl

37. The reabsorption of sodium chloride is increased in proximal convoluted tubules by hormones secreted from______________?

A. Anterior pituitary
B. Posterior pituitary
C. Adrenal cortex
D. Adrenal medulla

38. The part of nephron” least permeable to water” is______________?

A. Proximal tubule
B. Descending limb of loop of Henle
C. Ascending limb of loop of Henle
D. Collecting tubule

39. In which segment of the nephron does tubular fluid has the highest osmolarity ?

A. Henle’s loop
B. Distal tubule
C. Proximal tubule
D. Collecting duct

40. Site of ADH action is______________?

A. Proximal tubule
B. Loop of Henle
C. Vasa recta
D. Collecting tubule