In the renal tubules. where is the na+/k+ pump located?

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18. In the renal tubules, where is the Na+/K+ pump located? a. in the basolateral membrane of the proximal tubules b. in the apical membrane of the descending limb of the loop of Henle c. in the apical membrane of the collecting ducts d. in both the apical and basolateral membranes of principal cells e. in both the apical and basolateral membranes of intercalated cells 19. The hormone vasopressin a. is secreted by the anterior pituitary gland in response to changes in blood gsmolarity b. stimulates the kidneys to retain sodium ions c. stimulates the kidneys to conserve water. d. stimulates the kidneys to produce a large volume of urine (i.e., diuresis) e. All of the answers are correct. 20. Angiotensin Il stimulate:s a. b. c. d. e. thirst only. vasoconstriction only synthesis and release of aldosterone thirst and vasoconstriction thirst, vasoconstriction, and synthesis and release of aldosterone 21. What is the sum of Starlings forces within the renal corpuscle called? a. glomerular filtration pressure b. glomerular filtration rate c. glomerular filtration volume d. glomerular oncotic pressure e. glomerular capillary hydrostatic pressure 22. If nothing else is removed from the filtrate once it reaches the late distal tubules, the urine excreted would have which of the following properties? A) devoid of ions and large volume B) high C) low 9smolarity and low volume D) low gsmolaritv and large volume E) high gsmolarity and large volume and low volume

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18. Option e is correct. Sodium potassium pump is found in
apical and basolateral membrane both of intercalated cells of
collecting duct in renal tubule.

19. Option c is the correct answer. Vasopressin is secreted from
posteriar pituitary which is also known as antidiuretic hormone. It
stimulates kidney to conserve water and thus less amount of urine
is formed.

20. Option e is correct. Angiotensin has multiple effects. It
causes anterior vasoconstriction due to which blood pressure
increase. It also stimulate adrenal gland to release ADH. It also
modulate the sensation of thirst by acting on hypothalamus.

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21. Option a is correct. Sum of starling’s force within the
renal corpsules is known as glomerular filtration pressure.

22. Option e is correct. If reabsorption will not occur, most of
the ions and glucose will excreted out in urine which will cause
high osmolarity with large volume of urine.

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