Expansion of blood vessels, especially arterioles, which deliver increased blood flow to a region of the body. Vasodilation and vasoconstriction are regulated by the autonomic nervous system and can be affected by some medications.
Expansion of blood vessels, especially arterioles, which deliver increased blood flow to a region of the body. Vasodilation and vasoconstriction are regulated by the autonomic nervous system and can be affected by some medications.