Muscle 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 · Muscle physiology

Sample item

What provides the immediate energy for cross-bridge cycling?

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

The answer and the reasoning

C. ATP

The core Muscle physiology relationship supports ATP; it is the response that directly accounts for the structural location or physiological change described.

Option by option

  • A. Calcium alone

    Calcium alone is not consistent with the key finding in the stem.

  • B. Lactate

    Lactate does not fulfill the structural or functional role requested.

  • C. ATP (correct)

    Correct. ATP is directly supported by the central clue.

  • D. Glucose only

    Glucose only is associated with a different muscle physiology 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 C, ATP. The core Muscle physiology relationship supports ATP; it is the response that directly accounts for the structural location or physiological change described.

Why is "Calcium alone" not the answer?

Calcium alone is not consistent with the key finding in the stem.

Why is "Lactate" not the answer?

Lactate does not fulfill the structural or functional role requested.

Why is "Glucose only" not the answer?

Glucose only is associated with a different muscle physiology relationship.

What concept does this question test?

It tests Muscle physiology in Physiology. The correct option holds because: Correct. ATP is directly supported by the central clue.

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 Muscle 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.