
Which one of the following is synthesised in human body that dilates blood vessels and increase blood flow?
- Nitric oxide
- Nitrous oxide
- Nitrogen dioxide
- 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.

