Vasoconstriction is narrowing or constriction of the blood vessels. It happens when smooth muscles in blood vessel walls tighten. This makes the blood vessel opening smaller. “Vaso” actually ...

Many can act directly on the smooth muscle found in the walls of blood vessels. Others can act on the part of the nervous system that regulates vasodilation and vasoconstriction. Because ...

Vasoconstriction is the opposite of vasodilation. Vasoconstriction refers to the narrowing of the arteries and blood vessels. During vasoconstriction, the heart needs to pump harder to get blood ...

Laughter Helps Blood Vessels Function Better Date: March 16, 2005 Source: University Of Maryland Medical Center Summary: Using laughter-provoking movies to gauge the effect of emotions on ...

University Of Maryland School Of Medicine Study Shows Laughter Helps Blood Vessels Function Better Date: March 19, 2005 Source: University Of Maryland Medical Center Summary: Using laughter ...