Cov hlab ntsha yog cov kav dej uas peb lub cev thauj cov ntshav. Cov hlab ntsha thiab cov hlab ntsha yog cov hlab ntsha hauv cov hlab ntsha. Txawm hais tias lawv ob leeg nqa ntshav, muaj qhov sib txawv loj. Cov hlab ntsha thiab cov hlab ntsha yog tsim los ntawm cov ntaub so ntswg sib txawv, txhua tus ua haujlwm hauv ib txoj kev tshwj xeeb. Ib qho ntawm qhov sib txawv tseem ceeb tshaj plaws yog tias tag nrho cov hlab ntsha tso ntshav tawm ntawm lub plawv, thaum tag nrho cov hlab ntsha nkag mus rau cov ntshav los ntawm lwm qhov ntawm lub plawv. Cov hlab ntsha ua raws li lub plawv dhia ntawm lub plawv dhia (arterial nqaij contraction) thauj cov ntshav uas muaj oxygen thiab cov as-ham rau tag nrho lub cev, thiab cov hlab ntsha khaws cov ntshav deoxygenated uas nplua nuj nyob rau hauv carbon dioxide thiab xa mus rau lub plawv. Qhov tshwj xeeb tshaj yog tias cov hlab ntsha pulmonary nqa cov ntshav deoxygenated. Tom qab cov hlab ntsha nqa cov ntshav los ntawm lub cev mus rau lub plawv, nws yuav nkag mus rau hauv lub ntsws, thiab tom qab ntawd cov hlab ntsha pulmonary yuav xa cov ntshav oxidized rov qab mus rau lub plawv ntawm lub ntsws.
Ntau yam kab mob ntawm tib neeg lub cev yog tshwm sim los ntawm cov hlab ntsha. Yog li ntawd, hauv kev qhia kho mob, cov tub ntxhais kawm kho mob yuav siv ntau yamvascular system anatomical specimens kom nkag siab txog txoj haujlwm thiab kev faib tawm ntawm tib neeg cov hlab ntsha thiab lub luag haujlwm thiab kev faib ua haujlwm ntawm cov hlab ntsha sib txawv. Hauv cov tshuaj kho mob, cov hlab ntsha raug suav tias yog "cov ntsiab lus nkag" rau tib neeg cov ntshav, xws li txhaj cov kua dej lossis nqus ntshav.
Xaiv lus
