Definitions for vasodilatorˌvæs oʊ daɪˈleɪ tər, -dɪ-, -ˈdaɪ leɪ-, ˌveɪ zoʊ-
This page provides all possible meanings and translations of the word vasodilator
Random House Webster's College Dictionary
vas•o•di•la•torˌvæs oʊ daɪˈleɪ tər, -dɪ-, -ˈdaɪ leɪ-, ˌveɪ zoʊ-(n.)
any of various agents, as certain nerves or drugs, that relax or widen blood vessels and thereby maintain or lower blood pressure.
Category: Pharmacology, Physiology
Origin of vasodilator:
a drug that causes dilation of blood vessels
A drug or chemical agent that causes dilation of the blood vessels thereby reducing blood pressure.
causing dilation or relaxation of the blood vessels; as, the vasodilator nerves, stimulation of which causes dilation of the blood vessels to which they go. These nerves are also called vaso-inhibitory, and vasohypotonic nerves, since their stimulation causes relaxation and rest
Vasodilation refers to the widening of blood vessels. It results from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins, large arteries, and smaller arterioles. In essence, the process is the opposite of vasoconstriction, which is the narrowing of blood vessels. When blood vessels dilate, the flow of blood is increased due to a decrease in vascular resistance. Therefore, dilation of arterial blood vessels decreases blood pressure. The response may be intrinsic or extrinsic. In addition, the response may be localized to a specific organ, or it may be systemic. Drugs that cause vasodilation are termed vasodilators.
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