kärlkontriktion
Kärlkontriktion, also known as vasoconstriction, is the narrowing of blood vessels. This physiological process is primarily mediated by the smooth muscle tissue in the walls of arteries and veins. When these muscles contract, the diameter of the vessel decreases, leading to a reduction in blood flow through that particular vessel.
Vasoconstriction is a crucial mechanism for regulating blood pressure and distributing blood throughout the body. It
Several factors can trigger vasoconstriction. Hormonal signals, such as adrenaline (epinephrine) and noradrenaline (norepinephrine), released during
While essential for normal bodily functions, excessive or persistent vasoconstriction can contribute to various medical conditions,