Which hormone is primarily responsible for regulating water reabsorption in the renal collecting ducts
Which hormone is primarily responsible for regulating water reabsorption in the renal collecting ducts?
A. Aldosterone
B. Antidiuretic hormone (ADH)
C. Atrial natriuretic peptide (ANP)
D. Cortisol
Answer: B
Explanation: ADH acts on the renal collecting ducts to increase water permeability and reabsorption, regulating serum osmolality and urine concentration.
