Vasodilation disorderSystemicVasoconstrictionthe hydraulic work generated by the left ventricle (LV) pushes blood into the systemic circulation to provide the metabolic requirements of the organs. Although the amount of LV hydraulic work (i.e., the area of the pressure-volume loop) is not disputed,...
vasoconstriction noun va·so·con·stric·tion-kən-ˈstrik-shən :narrowing of the lumen of blood vessels especially as a result ofvasomotoraction More from Merriam-Webster onvasoconstriction Britannica.com:Encyclopedia article aboutvasoconstriction ...
11.The movement of materials at the site of capillaries is regulated by vasoconstriction, narrowing of the blood vessels, and vasodilation, widening of the blood vessels; this is important in the overall regulation of blood pressure. 12.“Colder temperatures increase vasoconstriction in the arteries,...
The transition fromvasoconstrictionto vasodilation is mediated by a variety of factors. Endothelial products and mast cell-derived factors such as leukotrienes, prostaglandins, and, in particular, histamine contribute to vasodilation[17,18]. Kinins, released by protein-binding molecules in the plasma via...
Mannitol causes compensatory cerebral vasoconstriction and vasodilation in response to blood viscosity changes There is no proof that osmotic agents such as mannitol lower intracranial pressure (ICP) by decreasing brain water content. An alternative mechanism might ... JP Muizelaar,Wei, Enoch P,Kontos,...
Vasoconstriction:Narrowing of the blood vessels that results from contraction of themuscularwalls of the vessels. The opposite ofvasoconstrictionisvasodilation. Actively Asleep Scientists used to think that people were physically and mentally inactive during sleep. But now they know that's not the case...
Clonidine-induced coronary vasodilation was studied in anesthetized dogs pretreated with propranolol to achieve beta-adrenoceptor blockade. The left circum... W S?Hngen,MM Winbury,JM Kitzen,... - 《Journal of Cardiovascular Pharmacology》 被引量: 176发表: 1988年 Identification of vascular postsynapti...
The changes in coronary blood flow with acetylcholine were unaffected by combined alpha- and beta-adrenoceptor blockades but were abolished by muscarinic blockade. Low doses of acetylcholine elicited only coronary vasodilation. All doses of acetylcholine, administered directly into the iliac artery, ...
Evidence for a role of nitric oxide in hindlimb vasodilation induced by hypothalamic stimulation in anesthetized rats. Electrical stimulation of the hypothalamus produces cardiovascular adjustments consisting of hypertension, tachycardia, visceral vasoconstriction and hindl... L Marcos,Ferreira-Neto,S Olga,....
Sympathetic withdrawal and forearm vasodilation during vasovagal syncope in humans was measured bilaterally in healthy volunteers (n = 10) by using plethysmography during two bouts of graded lower body negative pressure (LBNP) to ... NM Dietz,JR Halliwill,JM Spielmann,... - 《Journal of Applied...