| vasoconstriction | (noun) decrease in the diameter of blood vessels | - |
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| vasoconstrictive | (noun) any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure | Synonyms: pressor, vasoconstrictor |
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| vasoconstrictor | (noun) any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure | Synonyms: pressor, vasoconstrictive |
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| vasodilation | (noun) dilation of blood vessels (especially the arteries) | - |
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| vasodilative | (noun) a drug that causes dilation of blood vessels | Synonyms: vasodilator |
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| vasodilator | (noun) a drug that causes dilation of blood vessels | Synonyms: vasodilative |
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| vasomotor | (adjective) relating to the nerves and muscles that cause the blood vessels to constrict or dilate | - |
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| vasopressin | (noun) hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules | Synonyms: ADH, antidiuretic hormone, Pitressin |
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| vasopressor | (noun) any agent that produces vasoconstriction and a rise in blood pressure (usually understood as increased arterial pressure) | - |
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| vasosection | (noun) surgical incision into or division of the vas deferens | Synonyms: vasotomy |
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| vasotomy | (noun) surgical incision into or division of the vas deferens | Synonyms: vasosection |
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| vasovasostomy | (noun) a surgical procedure that attempts to restore the function of the vas deferens after a vasectomy | - |
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| vasovesiculitis | (noun) inflammation of the vas deferens and seminal vesicles; usually occurring with prostatitis | - |
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