Correct option is A
Nitric oxide (NO) is a molecule that plays a crucial role in the human body, particularly in the cardiovascular system. It is synthesized in the body by the enzyme nitric oxide synthase, which converts the amino acid L-arginine into nitric oxide and citrulline.
Functions of Nitric Oxide:
- Vasodilation: Nitric oxide is a potent vasodilator, meaning it relaxes the inner muscles of the blood vessels, causing them to widen (dilate). This dilation increases blood flow and reduces blood pressure.
- Regulation of Blood Pressure: By dilating blood vessels, nitric oxide helps regulate blood pressure, ensuring that blood can flow freely through the circulatory system.
- Prevention of Platelet Aggregation: Nitric oxide also prevents platelets from sticking together, which helps to prevent the formation of blood clots.
