Thaum cov ntshav oxygenated tshiab mus txog cov hlab ntsha ntawm cov ntaub so ntswg, oxygen txav los ntawm cov ntshav mus rau cov ntaub so ntswg, thiab carbon dioxide txav los ntawm cov ntaub so ntswg mus rau cov ntshav. Qhov kev sib pauv roj no uas tshwm sim ntawm cov ntshav thiab cov hlwb ntawm cov ntaub so ntswg thiab lub cev yog hu ua "kev ua pa sab hauv ".
Yuav ua li cas thaum cov ntshav mus txog capillaries?
Ntshav ntws los ntawm lub txaj capillary mus txog yuav luag txhua lub cell hauv lub cev thiab tswj kom hloov ntshav raws li lub cev xav tau. Tom qab cov pa oxygen raug tshem tawm ntawm cov ntshav, cov ntshav deoxygenated ntws mus rau lub ntsws, qhov chaw uas nws tau reoxygenated thiab xa los ntawm cov hlab ntsha rov qab mus rau lub plawv.
Yuav ua li cas oxygenated ntshav los ntawm lub plawv mus rau capillaries?
Systemic Circuit
Systemic circulation nqa oxygenated ntshav los ntawm sab laug ventricle, los ntawm cov hlab ntsha, mus rau capillaries hauv cov ntaub so ntswg ntawm lub cev. Los ntawm cov ntaub so ntswg capillaries, cov ntshav deoxygenated rov qab los ntawm cov hlab ntsha mus rau sab xis atrium ntawm lub plawv.
Yuav ua li cas tom qab cov pa nkag mus rau hauv cov hlab ntshav?
Cov phab ntsa ntawm cov alveoli sib koom ib daim nyias nyias nrog cov capillaries. Yog li lawv nyob ze. Qhov no cia cov pa oxygen thiab carbon dioxidediffuse, lossis txav mus los ntawm kev ua pa thiab cov hlab ntsha. Oxygen molecules txuas rau cov qe ntshav liab, uas rov qab mus rau lub plawv.
Kev ua haujlwm ntawm cov ntshav capillaries yog dab tsi?
Capillaries: Cov hlab ntsha me me no muaj cov phab ntsa nyias. Oxygen thiab as-ham los ntawm cov ntshav tuaj yeem txav mus los ntawm phab ntsa thiab nkag mus rau hauv lub cev thiab cov ntaub so ntswg. Cov capillaries tseem coj cov khoom pov tseg tawm ntawm koj cov ntaub so ntswg. Capillaries yog qhov chaw oxygen thiab cov as-ham pauv rau carbon dioxide thiab pov tseg.
