Question

Which of the following statements about aldosterone is NOT correct?- Aldosterone is stimulated by decreased plasma sodium levels and increased plasma potassium levels.- Aldosterone increases the number of passive sodium channels in the luminal membrane of the distal tubule and collecting duct, thus aiding sodium reabsorption.-Aldosterone is produced in the adrenal cortex.-Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.

Answer 1

Aldosterone is produced in the adrenal cortex and is stimulated by changes in plasma sodium and potassium levels. It increases sodium reabsorption by increasing the number of sodium channels and Na+-K+ ATPase pumps in the distal tubule and proximal tubule, respectively.

Step-by-step explanation:

Aldosterone is a steroid hormone produced by the adrenal glands, regulating electrolyte and water balance in the body. It acts on the kidneys, promoting the retention of sodium and excretion of potassium, thereby influencing blood pressure and fluid balance.

Aldosterone is produced in the adrenal cortex and is stimulated by decreased plasma sodium levels and increased plasma potassium levels. It increases the number of passive sodium channels in the luminal membrane of the distal tubule and collecting duct, aiding sodium reabsorption. Additionally, aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.

Answer 2

C. Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.

Explanation;

• Aldosterone hormone is produced by the adrenal gland and mainly carries out its functions in the kidney.Through the aldosterone hormone the body is able to retain more water for the kidney is able to hold more sodium.
• When the plasma sodium levels decrease and the plasma potassium levels increase the production of aldosterone hormone is stimulated for sodium is needed in the .body to maintain the high water levels in the body.