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

What is the principal effect of parathyroid hormone on serum calcium?

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

The answer and the reasoning

D. Raises serum calcium

The relevant Endocrine physiology principle makes Raises serum calcium the best answer because it directly explains the structure or physiological response in the stem.

Option by option

  • A. Blocks vitamin D

    Blocks vitamin D is associated with a different anatomical or physiological role.

  • B. Lowers serum calcium

    Lowers serum calcium does not correspond to the structure or response being tested.

  • C. Suppresses bone turnover completely

    Suppresses bone turnover completely is not supported by the key clue provided in this item.

  • D. Raises serum calcium (correct)

    Correct. Raises serum calcium directly follows from the core endocrine 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 D, Raises serum calcium. The relevant Endocrine physiology principle makes Raises serum calcium the best answer because it directly explains the structure or physiological response in the stem.

Why is "Blocks vitamin D" not the answer?

Blocks vitamin D is associated with a different anatomical or physiological role.

Why is "Lowers serum calcium" not the answer?

Lowers serum calcium does not correspond to the structure or response being tested.

Why is "Suppresses bone turnover completely" not the answer?

Suppresses bone turnover completely is not supported by the key clue provided in this item.

What concept does this question test?

It tests Endocrine physiology in Physiology. The correct option holds because: Correct. Raises serum calcium directly follows from the core endocrine physiology relationship.

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.