Question

What results from increased levels of aldosterone?

1) decreased Na+ reabsorption
2) increased K+ reabsorption
3) increased Na+ reabsorption
4) increased Ca2+ reabsorption

Answer 1

Option 2). Increased Na+ reabsorption and decreased K+ reabsorption result from increased levels of aldosterone.

Step-by-step explanation:

Aldosterone, a hormone released by the adrenal cortex, causes the kidneys to increase the reabsorption of sodium ions and water from the filtrate into the blood. This leads to an increase in blood sodium levels and blood volume, resulting in increased blood pressure. However, as aldosterone increases sodium reabsorption, it also causes increased excretion of potassium from the body. So the correct results from increased levels of aldosterone are increased Na+ reabsorption and decreased K+ reabsorption. Hence, option 2 is the correct answer.