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

Which hormone is released in a surge to trigger ovulation in a typical menstrual cycle?

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

The answer and the reasoning

A. Luteinizing hormone

A midcycle surge in luteinizing hormone triggers follicular rupture and ovulation, followed by luteinization of the follicle and progesterone secretion from the corpus luteum.

Option by option

  • A. Luteinizing hormone (correct)

    Correct: LH surge is the immediate trigger for ovulation.

  • B. Prolactin

    Prolactin primarily supports lactation.

  • C. Cortisol

    Cortisol is a glucocorticoid stress hormone.

  • D. Oxytocin

    Oxytocin mediates uterine contraction and milk ejection.

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, Luteinizing hormone. A midcycle surge in luteinizing hormone triggers follicular rupture and ovulation, followed by luteinization of the follicle and progesterone secretion from the corpus luteum.

Why is "Prolactin" not the answer?

Prolactin primarily supports lactation.

Why is "Cortisol" not the answer?

Cortisol is a glucocorticoid stress hormone.

Why is "Oxytocin" not the answer?

Oxytocin mediates uterine contraction and milk ejection.

What concept does this question test?

It tests Endocrine physiology in Physiology. The correct option holds because: Correct: LH surge is the immediate trigger for ovulation.

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.