Blood 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 · Blood physiology

Sample item

What is the principal role of erythrocytes?

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

The answer and the reasoning

B. Transport oxygen

Erythrocytes use hemoglobin to transport oxygen from lungs to tissues and help carry carbon dioxide back to the lungs for elimination.

Option by option

  • A. Form collagen

    Collagen is produced mainly by fibroblasts.

  • B. Transport oxygen (correct)

    Correct: erythrocytes primarily transport oxygen using hemoglobin.

  • C. Secrete insulin

    Insulin is secreted by pancreatic beta cells.

  • D. Produce antibodies

    Antibodies are secreted by plasma cells.

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 B, Transport oxygen. Erythrocytes use hemoglobin to transport oxygen from lungs to tissues and help carry carbon dioxide back to the lungs for elimination.

Why is "Form collagen" not the answer?

Collagen is produced mainly by fibroblasts.

Why is "Secrete insulin" not the answer?

Insulin is secreted by pancreatic beta cells.

Why is "Produce antibodies" not the answer?

Antibodies are secreted by plasma cells.

What concept does this question test?

It tests Blood physiology in Physiology. The correct option holds because: Correct: erythrocytes primarily transport oxygen using hemoglobin.

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 Blood 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.