Cardiac output: 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 · Cardiac output

Sample item

What increases stroke volume by preload effect?

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

The answer and the reasoning

A. Increased venous return

This item reviews Cardiac output; Increased venous return is the best answer because it directly fits the anatomical or physiological relationship described.

Option by option

  • A. Increased venous return (correct)

    Correct. Increased venous return matches the defining feature.

  • B. Tachyarrhythmia only

    Tachyarrhythmia only is not supported by the key finding.

  • C. Reduced contractility

    Reduced contractility is plausible but is not the best answer.

  • D. Increased afterload

    Increased afterload does not match the stated relationship.

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, Increased venous return. This item reviews Cardiac output; Increased venous return is the best answer because it directly fits the anatomical or physiological relationship described.

Why is "Tachyarrhythmia only" not the answer?

Tachyarrhythmia only is not supported by the key finding.

Why is "Reduced contractility" not the answer?

Reduced contractility is plausible but is not the best answer.

Why is "Increased afterload" not the answer?

Increased afterload does not match the stated relationship.

What concept does this question test?

It tests Cardiac output in Physiology. The correct option holds because: Correct. Increased venous return matches the defining feature.

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 Cardiac output?

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.