PATHOLOGY MCQ
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What hormones regulate the reabsorption of sodium and water in the distal convoluted tubule?
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aldosterone and rennin
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creatinine and renin
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aquaporin and aldosterone
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None of the above
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Explanation:
Detailed explanation-1: -Therefore the renin-angiotensin system is activated. This causes an increase in water absorption as well as activation of aldosterone. Aldosterone causes sodium to be absorbed and potassium to be excreted into the lumen by principal cells.
Detailed explanation-2: -Aldosterone stimulates reabsorption of sodium, sustaining blood volume and pressure in the face of salt deprivation or extracellular fluid depletion. The steroid also stimulates excretion of potassium, protecting extracellular fluid from excessive levels of that ion.
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