Video: Dab tsi yog vasoconstriction systemic?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Vasoconstriction . Tshuaj ua rau vasoconstriction , tseem hu ua vasoconstrictors , yog ib hom tshuaj siv los ua kom ntshav siab. Generalized vasoconstriction feem ntau ua rau nce ntxiv hauv zoo ntshav siab, tab sis nws kuj tseem tuaj yeem tshwm sim hauv cov nqaij tshwj xeeb, ua rau txo qis hauv cov ntshav ntws.
Hais txog qhov no, ua li cas vasoconstriction nce ntshav siab?
Nyob rau hauv lub venous system, txwv tsis pub nce ntshav siab raws li nws ua rau cov hlab ntsha; qhov nce siab pab kom rov qab los ntshav mus rau lub plawv. Tsis tas li ntawd, txwv ua rau lub nkoj lumen dhau los ua qhov sib npaug, txo qis thiab nce ntxiv ntshav ntws.
Ib yam nkaus, dab tsi ua rau vasoconstriction thiab vasodilation? Thaum vasodilation yog kev nthuav dav ntawm koj cov hlab ntsha, vasoconstriction yog qhov nqaim ntawm cov hlab ntsha. Nws yog vim muaj kev sib zog ntawm cov leeg hauv cov hlab ntshav. Thaum twg vasoconstriction tshwm sim, cov ntshav ntws mus rau qee qhov ntawm koj lub cev cov ntaub so ntswg tau txwv. Koj cov ntshav siab kuj nce.
Dhau li, dab tsi yog qhov system vasculature?
Vascular kev tiv thaiv yog qhov tsis kam uas yuav tsum tau kov yeej txhawm rau thawb cov ntshav los ntawm cov hlab ntshav thiab tsim kom ntws. Lub cev vascular kev tiv thaiv yog siv hauv kev suav cov ntshav siab, ntshav ntws, thiab lub plawv ua haujlwm.
Dab tsi yog vasoconstrictor tshuaj?
Raws li lub npe qhia, vasoconstrictor tshuaj cog lus cov leeg nqaij hauv cov hlab ntshav, uas ua rau cov hlab ntsha nruj. Vim vasoconstrictor tshuaj nce ntshav siab, lawv suav nrog pab pawg ua haujlwm ntawm tshuaj hu ua pressor tshuaj.
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