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

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

Explanation

Option (a) is correct
  • Nitric oxide: It acts as a vasodilator, meaning it causes blood vessels to relax and widen, increasing blood flow to tissues throughout the body. It plays a crucial role in regulating blood pressure and overall cardiovascular health.
  • Examples of natural vasodilators:
    • L-arginine
    • L-citrulline
    • Glycine
    • propionyl-L-carnitine
    • (GPLC)
    • Nitric oxide
    • Ginger
    • Ginkgo biloba
    • Turmeric
  • Nitrous oxide: Also known as laughing gas, it is used for anaesthesia and pain relief.
  • Nitrogen dioxide: It is an air pollutant and can actually restrict blood flow.
  • Nitrogen pentoxide: It is a strong oxidising agent.
Answer: (a) Nitric oxide: Difficulty Level: Medium
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