UPSC Prelims 2024 · Question 93 of 97

UPSC Prelims 2024 question on Nitric Oxide

Which one of the following is synthesised in the human body that dilates blood vessels and increases blood flow?

  1. Nitric oxide
  2. Nitrous oxide
  3. Nitrogen dioxide
  4. Nitrogen pentoxide
Show answer

Answer: A. Nitric oxide

Verdict

Correct answer: Nitric oxide → Option (a).

Analysis

Nitric oxide (NO) is produced naturally by the human body and is one of the most important molecules for blood vessel health. It is a vasodilator, meaning it relaxes the inner muscles of your blood vessels, causing the vessels to widen. In this way, nitric oxide increases blood flow and lowers blood pressure.

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