22. There is one for each nephron a. peritubular capillary b. vasa recta c. mino

Question

22. There is one for each nephron a. peritubular capillary b. vasa recta c. minor calyx d. afferent arteriole e. interlobular artery 23. The amount of fluid entering the capsular spaces of all the nephrons in a given time is called a. the rate of tubular secretion b. the rate of tubular reabsorption c. the glomerular filtration rate d. the net filtration pressure e. the renal clearance 24. The kidneys do not a. control blood pressure b. regulate the pH of the body fluids c. have any role in erythrocyte production d. produce vitamin D e. secrete hormones that stimulate thirst 25. Glucose and amino acids are reabsorbed from the glomerular filtrate by a. the glomerular capillaries b. the collecting duct c. the renal corpuscle d. the proximal convoluted tubule e. the distal convoluted tubule 26. The thick segment of the ascending limb of the nephron loop is permeable to a. water but not urea b. sodium ions but not potassium ions c. sodium and potassium ions but not chloride ions d. water but not salts e. sodium, potassium, and chloride ions but not water 27. Urine normally has a pH of approximately a. 4.5 b. 5.5 c. 7.4 d. 8.2 e. 9.1

Explanation / Answer

Answer 22

d) afferent arteriole

because it is group of blood vessels which help in the regulation of blood pressure as a part of the tubuloglomerular feedback mechanism.

Answer 23

C) the glomerular filtration rate

Because the quantity of glomerular filtrate formed each minute in all nephrons of both kidneys

Answer 24

e) secrete hormones that stimulate thirst

because ADH secretion stimulates thirst which plays an important role in water balance

Answer 25

d) the proximal convoluted tubule

because around 65% of the glomerular filtrate is reabsorbed by PCT before reaching the loop of henle.

Glucose and amino acid are reabsorbed by secondary active transport

Answer 26

e) sodium, potassium, and chloride ions, but not water

because it is impermeable to water , and the filtrate become hypotonic to blood plasma.

Answer 27

b) 5.5

because the pH of urine mainly depend on the amount of acidic and basic food in the diet

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