Biology Homeostasis PMDC Conceptual Practice
PMDC Verified Question 94 of 99
Active uptake of sodium in the thick ascending limb of Henle and collecting duct is promoted by:
A
Aldosterone
B
Antidiuretic hormone (ADH)
C
Parathyroid hormone (PTH)
D
Atrial natriuretic peptide (ANP)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Aldosterone
Concept: Endocrine regulation of renal sodium handling.

Solution: Aldosterone increases sodium reabsorption in renal tubules. (Conversely, ANP inhibits sodium reabsorption).

Why other options are incorrect:
  • Option B (ADH): Regulates water reabsorption via aquaporins.

  • Option C (PTH): Regulates calcium reabsorption and phosphate excretion.

  • Option D (ANP): Promotes sodium excretion (natriuresis) to reduce blood pressure.

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