Definitions for "Vasoconstriction"
the constriction of the capillaries in the skin in response to cold temperatures.
Narrowing of a vessel lumen due to contraction of smooth muscle cells in the vessel wall.
A reduction in the diameter of arterioles due to the contraction of smooth muscles in the tunica media; elevates peripheral resistance; may occur in response to local factors, through the action of hormones, or from the stimulation of the vasomotor center.