Cardiovascular 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 · Cardiovascular physiology

Sample item

What happens to systemic vascular resistance during normal dynamic exercise?

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

The answer and the reasoning

B. It decreases in active muscle beds

Metabolically active skeletal muscle vasodilates during dynamic exercise, lowering resistance in those beds despite sympathetic vasoconstriction elsewhere.

Option by option

  • A. It is unrelated to circulation

    Vascular resistance is a central determinant of cardiovascular function.

  • B. It decreases in active muscle beds (correct)

    Correct: active muscle vasodilation lowers resistance in exercised beds.

  • C. It always doubles

    Resistance does not always double because muscle vasodilation is prominent.

  • D. It becomes zero everywhere

    Systemic vascular resistance never becomes zero throughout the circulation.

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.

More Physiology questions

Questions about this Physiology question

What is the answer to this Physiology question?

The best answer is B, It decreases in active muscle beds. Metabolically active skeletal muscle vasodilates during dynamic exercise, lowering resistance in those beds despite sympathetic vasoconstriction elsewhere.

Why is "It is unrelated to circulation" not the answer?

Vascular resistance is a central determinant of cardiovascular function.

Why is "It always doubles" not the answer?

Resistance does not always double because muscle vasodilation is prominent.

Why is "It becomes zero everywhere" not the answer?

Systemic vascular resistance never becomes zero throughout the circulation.

What concept does this question test?

It tests Cardiovascular physiology in Physiology. The correct option holds because: Correct: active muscle vasodilation lowers resistance in exercised beds.

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 Cardiovascular 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.