What stimulates sodium reabsorption in the distal portions of the nephron
A)atrial natriuretic peptide
B)vasopressin
C)angiotensin II
D)aldosterone

Question

Quizplus · Accepted Answer

Aldosterone is a hormone that helps stimulate the reabsorption of sodium in the distal portions of the nephron by increasing the expression and activity of sodium channels and sodium-potassium ATPase pumps on the luminal and basolateral membranes of the renal tubular cells, respectively. This leads to increased sodium reabsorption and potassium secretion, which helps maintain electrolyte balance and blood pressure. Atrial natriuretic peptide (ANP) and vasopressin (antidiuretic hormone, ADH) have the opposite effect, promoting sodium excretion and water retention in the urine. Angiotensin II can also stimulate sodium reabsorption, but primarily in the proximal tubule, by constricting the efferent arteriole and increasing tubular sodium-hydrogen exchange.

What Stimulates Sodium Reabsorption in the Distal Portions of the Nephron