Crossword clues for vasoconstriction
vasoconstriction
Douglas Harper's Etymology Dictionary
1899, from comb. form of vas + constriction.
Wiktionary
n. constriction of a blood vessel
WordNet
n. decrease in the diameter of blood vessels
Wikipedia
Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in staunching hemorrhage and acute blood loss. When blood vessels constrict, the flow of blood is restricted or decreased, thus retaining body heat or increasing vascular resistance. This makes the skin turn paler because less blood reaches the surface, reducing the radiation of heat. On a larger level, vasoconstriction is one mechanism by which the body regulates and maintains mean arterial pressure.
Medications causing vasoconstriction, also known as vasoconstrictors, are one type of medicine used to raise blood pressure. Generalized vasoconstriction usually results in an increase in systemic blood pressure, but it may also occur in specific tissues, causing a localized reduction in blood flow. The extent of vasoconstriction may be slight or severe depending on the substance or circumstance. Many vasoconstrictors also cause pupil dilation. Medications that cause vasoconstriction include: antihistamines, decongestants, and stimulants. Severe vasoconstriction may result in symptoms of intermittent claudication.
Usage examples of "vasoconstriction".
He explained about vasoconstriction of the coronary vessels, something like that brought about by a lifetime of gorging on butter, or a thrombosis.
The vasoconstriction called gooseflesh meant his skin had begun sealing itself tighter to keep body heat in, stop blood flow to his periphery, where heat evaporated faster, and preserve it around his core organs.