Question

An increase in the concentration of plasma potassium causes an increase in

• A. Release of renin
• B. Secretion of aldosterone
• C. Secretion of ADH
• D. Release of natriuretic hormone

Answer 1

The correct option is B Secretion of aldosterone

K+ is a potent stimulus of aldosterone production, an effect enhanced by angiotensin II. Angiotensin is a peptide hormone that causes vasoconstriction and an increase in blood pressure. It is part of the renin-angiotensin system, which regulates blood pressure. Angiotensin also stimulates the release of aldosterone from the adrenal cortex to promote sodium retention by the kidneys. the plasma aldosterone concentration (PAC) is a product of stimulation by K+ and angiotensin II

So, the correct answer is 'Secretion of aldosterone'.