Vasoconstriction

Narrowing of the blood vessel

Principle
The principle is the contraction of the smooth muscle in the vessel wall.

Substances with a vasoconstrictive effect

 * Endothelin I,
 * tromboxane A2,
 * angiotensin II,
 * norepinephrine (α1-receptors),
 * tromboxane,
 * serotonin,
 * vasopressin-ADH,
 * other α1 receptor stimulators.

Use in the body

 * Local regulation of tissue blood flow (response to hypoxia in the pulmonary basin - the so-called Euler-Liljestrand mechanism, reaction to cold, etc.)
 * stop bleeding,
 * regulation Mean arterial pressure.

Related articles

 * Vasodilatation

Linnks

 * | Velký lékařský slovník