vasoconstriction(redirected from Vasoconstrictors)
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decrease in the caliber of blood vessels. adj., adj vasoconstric´tive.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Narrowing of the blood vessels.
Farlex Partner Medical Dictionary © Farlex 2012
Constriction of a blood vessel, as by a nerve or drug.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Reduction in the caliber of a blood vessel due to contraction of smooth muscle fibers in the tunica media leading to decreased blood flow to a part.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
vasoconstrictionActive narrowing of small arteries as a result of contraction of the circular smooth muscle fibres in their walls. This severely reduces the flow of blood through them. Compare VASODILATATION.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
vasoconstrictiona narrowing of the blood vessels, often in response to cold, which occurs through a contraction of INVOLUNTARY muscles in the walls of the vessels brought about by a stimulus from the sympathetic nervous system (see AUTONOMIC NERVOUS SYSTEM).
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Constriction of a blood vessel.
Mentioned in: Induction of Labor
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
Narrowing of blood vessels.
Medical Dictionary for the Dental Professions © Farlex 2012