Renal 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 · Renal physiology

Sample item

What hormone promotes distal sodium reabsorption?

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

The answer and the reasoning

A. Aldosterone

Aldosterone acts in the distal nephron to increase sodium reabsorption and potassium secretion, supporting extracellular volume regulation.

Option by option

  • A. Aldosterone (correct)

    Correct: aldosterone promotes distal sodium retention.

  • B. Calcitonin

    Calcitonin influences calcium handling.

  • C. Prolactin

    Prolactin acts in lactation.

  • D. Erythropoietin

    Erythropoietin stimulates red-cell production.

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 A, Aldosterone. Aldosterone acts in the distal nephron to increase sodium reabsorption and potassium secretion, supporting extracellular volume regulation.

Why is "Calcitonin" not the answer?

Calcitonin influences calcium handling.

Why is "Prolactin" not the answer?

Prolactin acts in lactation.

Why is "Erythropoietin" not the answer?

Erythropoietin stimulates red-cell production.

What concept does this question test?

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

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 Renal 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.