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Dual control of Aldosterone secretion by Na+ and K+ - lecture

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Dual control of Aldosterone secretion by Na+ and K+ - lecture

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Questions and Answers

What is the effect of aldosterone on principal tubular cells in the nephron?

It stimulates reabsorption of Na+ and secretion of K+. (correct)

It inhibits reabsorption of Na+ and secretion of K+.

It stimulates reabsorption of both Na+ and K+.

It inhibits reabsorption of both Na+ and K+.

What is the effect of a rise in plasma K+ concentration on aldosterone secretion?

It increases aldosterone secretion. (correct)

It decreases aldosterone secretion.

It has no effect on aldosterone secretion.

It inhibits aldosterone secretion.

What is the effect of aldosterone on urinary excretion of excess K+?

It promotes urinary excretion of excess K+. (correct)

It inhibits urinary excretion of excess K+.

It has no effect on urinary excretion of excess K+.

It promotes urinary excretion of excess Na+.

What is the effect of a decline in plasma K+ concentration on aldosterone secretion?

It decreases aldosterone secretion. Signup and view all the answers

Which cells in the nephron are stimulated by aldosterone to secrete K+?

Principal tubular cells Signup and view all the answers

Which ion does aldosterone enhance the reabsorption of by principal tubular cells?

Na+ Signup and view all the answers

What is the effect of a decrease in plasma Na+ concentration on aldosterone secretion?

It has no effect on aldosterone secretion. Signup and view all the answers

What is the primary function of aldosterone in the nephron?

To stimulate the reabsorption of Na+ and K+. Signup and view all the answers

Which gland secretes aldosterone?

Adrenal cortex Signup and view all the answers

What is the effect of aldosterone on blood pressure?

It increases blood pressure Signup and view all the answers

What is the effect of a decrease in plasma volume on aldosterone secretion?

It increases aldosterone secretion. Signup and view all the answers

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