| 单词 | vasoconstriction |
| 释义 | vasoconstriction noun[U] biologyspecializeduk/ˌveɪzəʊkənˈstrɪkʃən/us/ˌveɪzoʊkənˈstrɪkʃən/thesituationofbloodvessels(= thetubesthatcarryblood)becomingnarrower 血管收缩The circulatory system & blood
Examplesofvasoconstrictionvasoconstriction It is supposed that these improvements of clinical symptoms are based on inhibition ofvasoconstrictionand platelet aggregation in pulmonary circulation. From theCambridge English Corpus Reduced invasion will leave the spiral arteries vasoreactive, and thus more likely to undergo spontaneous transientvasoconstriction. From theCambridge English Corpus Activation of the extrinsic coagulation pathway causes additional adherence of platelets and even greatervasoconstriction. From theCambridge English Corpus Traditionally phenylephrine was reserved as a second-line drug for obstetrics because of concern about potential uteroplacentalvasoconstriction. From theCambridge English Corpus Elevated high-density lipoprotein levels ameliorate abnormalvasoconstrictionin early atherosclerosis. From theCambridge English Corpus When the core temperature falls, the hypothalamus increases core heat production and causesvasoconstrictionwhich minimizes heat transfer to the skin. From theCambridge English Corpus In particular, these studies showed that large doses of vasopressors causedvasoconstrictionin the uteroplacental circulation which could result in fetal hypoxia. From theCambridge English Corpus First, ongoing perfusion of the placenta may cause continuous stimulation of production of vasoactive substances, which will tend to increase placentalvasoconstriction. From theCambridge English Corpus Evidence from recent clinical trials suggests that concerns about uteroplacentalvasoconstrictioncaused by phenylephrine are unfounded and this is the authors' drug of choice. From theCambridge English Corpus Nitric oxide alone, at least in this group of patients, does not unmask all the reversiblevasoconstriction. From theCambridge English Corpus Thevasoconstrictioncaused by ergometrine involves mainly capacitance vessels, leading to increase in central venous pressure and blood pressure. From theCambridge English Corpus This, however, results in generalizedvasoconstriction, sludging of blood cells in the microcirculation, and poor perfusion of the tissues. From theCambridge English Corpus Vasoconstrictionfollows, in response to factors released by these cells. From theCambridge English Corpus This suggests that severe muscular hypertrophy without occlusive disease may be sufficient to produce irreversible pulmonary hypertension, possibly due to markedvasoconstriction. From theCambridge English Corpus It is also involved in regulation of cell adhesion,vasoconstrictionat sites of vessel-wall injury and stimulation of platelet aggregation. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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