Nitric Oxide & Blood Vessels
Question
Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?
Options
Nitric oxide
Nitrous oxide
Nitrogen dioxide
Nitrogen pentoxide
Explanation
Nitric oxide (NO) is a crucial signaling molecule naturally synthesized in the human body by the vascular endothelium. It acts as a powerful vasodilator, relaxing the smooth muscles of blood vessels and increasing blood flow. Nitrous oxide is an anesthetic (laughing gas), and nitrogen dioxide is a toxic atmospheric pollutant.
Answer: (a).
Question details
Year
2024
Paper
GS Paper 1
Question
Q33
Subject
Science & Technology
Sub-topic
Biotechnology & Genetics
Type
Factual single
Difficulty
Medium
Nature
Static
Source hint
NCERT Biology Cl.11 / Endogenous Nitric Oxide Vasodilation Studies
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