In turn, its influence on the reward circuit can lead a user to bypass survival activities and repeat drug use. Chronic cocaine use can lead to a cocaine addiction and in some cases damage the brain and other organs. An addict will continue to use cocaine even when faced with adverse consequences.
vasodilator (vÄÂ´zÅdÄ«Â´lÄtur), n 1. an agent that causes dilation of the blood vessels. n 2. a drug that relaxes the smooth muscle walls of the blood vessels and increases their diameter.
Definition of vasodilation. Vasodilation (definition) = the increase in the internal diameter of blood vessels that is caused by relaxation of smooth muscles within the wall of the vessels, thus causing an increase in blood flow. The opposite effect is vasoconstriction.