Endocrine physiology: practice question

A Physiology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Physiology · Endocrine physiology

Sample item

What is the principal action of aldosterone?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Increase sodium reabsorption

Aldosterone increases sodium reabsorption and potassium secretion in the distal nephron, helping maintain extracellular fluid volume and potassium balance.

Option by option

  • A. Lower glucose directly

    Aldosterone does not directly lower blood glucose.

  • B. Increase calcium loss only

    Aldosterone is not primarily a regulator of calcium loss.

  • C. Block potassium secretion

    Aldosterone increases rather than blocks potassium secretion.

  • D. Increase sodium reabsorption (correct)

    Correct: aldosterone promotes distal sodium reabsorption.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Physiology question

What is the answer to this Physiology question?

The best answer is D, Increase sodium reabsorption. Aldosterone increases sodium reabsorption and potassium secretion in the distal nephron, helping maintain extracellular fluid volume and potassium balance.

Why is "Lower glucose directly" not the answer?

Aldosterone does not directly lower blood glucose.

Why is "Increase calcium loss only" not the answer?

Aldosterone is not primarily a regulator of calcium loss.

Why is "Block potassium secretion" not the answer?

Aldosterone increases rather than blocks potassium secretion.

What concept does this question test?

It tests Endocrine physiology in Physiology. The correct option holds because: Correct: aldosterone promotes distal sodium reabsorption.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Endocrine physiology?

For each system, sketch the key graph (pressure–volume loop, oxygen dissociation curve, nephron handling) and explain it aloud. Then use the flashcards and the other Physiology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.