What Is Vasomotor Tone

Vasomotor tone is the end result of a complex set of interactions that control relaxation and contraction of blood vessels. The critical role of nitric oxide (NO) in modulating vasomotor tone has become increasingly apparent over the last 15 years.

What regulates vasomotor tone?

The vasomotor tone is an essential determinant of blood pressure. Vascular resistance is the result of a calculation including vasomotor tone, blood flow and blood viscosity. The vascular tone is modulated by the sympathetic system and the direct actions of drugs (patient’s pathology, anaesthesia).

What is vasomotor tone of arterioles?

Vasomotor tone of arterioles. is a steady constriction stated due to sympathetic nervous system effect. Which tunic of a blood vessel contains an endothelium.