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Nitric Oxide

Meaning

Nitric Oxide (NO) is a crucial, short-lived gaseous signaling molecule produced endogenously in the human body, acting as a potent paracrine and autocrine mediator in various physiological systems. In the cardiovascular system, its primary role is as a powerful vasodilator, relaxing the smooth muscle of blood vessel walls to increase blood flow and regulate blood pressure. It also functions as a neurotransmitter and plays a role in immune response. Adequate nitric oxide bioavailability is a key marker of endothelial health and is essential for optimal circulation and tissue oxygenation.