Lawv yuav tsum cais cov ntshav oxygenated thiab de-oxygenatedkom lawv cov hlab ntsha ua haujlwm tau zoo dua thiab tuaj yeem tswj hwm lawv lub cev kub. Nws kuj tseem zoo dua yog tias cov ntshav oxygenated nyob sib cais, vim nws cov ntshav deoxygenated yuav ua rau tag nrho cov ntshav tsis huv.
Vim li cas thiaj yuav tsum cais cov ntshav oxygenated thiab deoxygenated hauv cov tsiaj?
Txhawm rau tswj lub cev qhov kub thiab txias, cov tsiaj no xav tau oxygen ntau dua los ua kom lub cev ua pa ntau dua thiab tuaj yeem tsim lub zog ntau dua. Kev sib cais ntawm cov pa oxygenated thiab deoxygenated ntshav tso cai kom muaj cov pa oxygen rau lub cev zoo heev xav tau rau lub hom phiaj no.
Vim li cas thiaj yuav tsum tau oxygenated thiab deoxygenated ntshav tsis sib tov?
Lub ventricle sab laug tso cov ntshav uas muaj oxygen rau tag nrho lub cev. - Ib txoj kev li qub uas muaj nyob hauv lub siab tiv thaiv cov ntshav rov qab, yog li, cov ntshav uas muaj oxygen thiab carbon dioxide-nplua nuj tsis tuaj yeem sib xyaw. Li no, lo lus teb raug yog kev xaiv (A).
Vim li cas nws tseem ceeb kom cov ntshav oxygenated cais tawm ntawm cov ntshav oxygenated?
Kev cais cov ntshav oxygenated thiab deoxygenated tso cai kom muaj cov pa oxygen zoo rau lub cev. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog nyob rau hauv cov noog thiab cov tsiaj nyeg uas xav tau lub zog siab thiab siv zog tas li los tswj lawv lub cev.
Cov ntshav oxygenated thiab cov ntshav deoxygenated khaws cia sib cais li cas?
Lub siab raug muab cais ua plaub chav: sab xis thiab sab laug atria, thiab sab xis thiab sab laug ventricles. Cov ntshav tsis muaj oxygen rov qab los rau lub plawv los ntawm lwm qhov chaw ntawm lub cev nkag mus rau sab xis ntawm lub plawv thiab nkag mus rau hauv lub ntsws.
