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Video: Puas yog qee qhov capillaries muaj li qub?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tsis yog cov hlab ntsha tsis muaj li qub . A cov hlab ntsha yog cov hlab ntshav me me los ntawm 5 txog 10 micrometres. Capillaries yog me me piv rau cov leeg & cov hlab ntsha. Yog li, Arteries thiab leeg ntshav tsis xav tau li qub vim siab los ntawm lub plawv muaj zog heev uas cov ntshav tsuas tuaj yeem ntws hauv ib qho kev taw qhia.
Ntxiv mus, vim li cas cov hlab ntsha hauv tib neeg lub cev tsis muaj li qub?
Los ntawm cov hlab ntsha, cov ntshav nkag los hauv cov capillaries uas tshwm sim los ntawm cov ntshav siab. Tom qab ntawd nws nkag mus rau cov leeg. Txij ntawm no mus, cov ntshav nkag mus rau sab xis ntawm lub plawv. Nws yog meej tias cov ntshav mus vim yog ntshav siab thiaj li muaj yog tsis muaj yuav tsum tau ntawm cov hlab ntsha hauv cov hlab ntsha.
Tom qab ntawd, lo lus nug yog, cov hlab ntsha puas muaj li qub los tiv thaiv rov qab? Capillaries yog qhov chaw nres tsheb tom ntej thiab ua haujlwm raws li qhov chaw sib pauv roj thiab cov as -ham ntawm cov ntshav thiab cov nqaij mos. Vim tias cov leeg ntshav nyob hauv siab, lawv muaj ib txoj kev li qub uas ua kom ntshav txav mus rau lub plawv thiab tiv thaiv rov qab.
Yog li ntawd, Puas yog tag nrho cov leeg ntshav muaj li qub?
Feem ntau cov leeg yog nruab nrog li qub los tiv thaiv cov ntshav ntws hauv qhov rov qab.
Dab tsi yog cov nkoj uas muaj li qub los tiv thaiv ntshav ntws rov qab?
Tshooj 16 Tib Neeg Txoj Kev Siv Hluav Taws Xob
A | B |
---|---|
Cov hlab ntsha | Nqa cov ntshav oxygenated (qib oxygen ntau) |
Arterioles | Arteries faib ua cov hlab me me uas hu ua |
Cov leeg | Nqa cov ntshav deoxygenated |
Cov leeg | Muaj cov li qub uas pab tiv thaiv cov ntshav ntws rov qab |
Pom zoo:
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Plaster phab ntsa nrog cov xim pleev xim yog muaj ntau nyob hauv cov tsev qub. Tshem tawm lub lath thiab phab ntsa plaster tsim cov hmoov av ntau, uas txhais tau tias yuav tsum tau saib xyuas zoo kom muaj cov hmoov av thiab tiv thaiv cov neeg ua haujlwm thiab lwm tus los ntawm nqus nws. Kev noj qab haus huv nyob rau lub sijhawm luv ntawm cov tshuaj lom lom suav nrog ntuav, ntuav, tsis nco qab thiab tuag
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