"Aldosterone from the adrenal cortex causes sodium ions to be: A. Secreted and water to be reabsorbed. B. Secreted and water to be secreted. C. Reabsorbed and water to be reabsorbed. D. Reabsorbed and water to be secreted."
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Answer

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Step 1
: Understand the role of aldosterone in the body.

Aldosterone is a hormone produced by the adrenal cortex that helps regulate electrolyte and fluid balance. It does this by increasing the reabsorption of sodium ions (Na+) and water in the kidneys while increasing the secretion of potassium ions (K+).

Step 2
: Analyze the given options.

Let's break down each option to see which one correctly describes the effects of aldosterone on sodium and water: A. Secreted and water to be reabsorbed. B. Secreted and water to be secreted. C. Reabsorbed and water to be reabsorbed. D. Reabsorbed and water to be secreted.

Final Answer

A. Secreted and water to be reabsorbed.