All these Physiology MCQs are specially framed to strengthen the conceptual understanding of different biology topics. Human Physiology MCQ with answers covers multiple concepts such as human digestion, nervous system, human reproduction, body fluids and circulation, breathing and exchange of gases, renal System, respiratory System, Git and Liver, endocrinology, locomotor and moment in human Sense Organs, Reflex Actions, Spinal Nerve, Physiology of Urine Formation, insulin physiology – and much more. All these topics are chosen from trusted and best reference books on physiology. These physiology MCQs with answers are also helpful for the preparation of various interviews, entrance examinations, other competitive examinations, and certifications for all Experienced, Freshers and Students. Also, check MCQs on Pharmacology here.

221. 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

222. 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

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

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

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

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

225. 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

226. Tubular maximum for glucose is_____________?

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

227. 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

228. 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

229. 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

230. Site of ADH action is______________?

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

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