Video: Koj cov hlab ntsha nthuav tawm ntev npaum li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tab sis yog tias koj coj tag nrho cov hlab ntsha tawm ntawm ib tug nruab nrab me nyuam thiab nteg lawv tawm hauv ib kab, cov kab yuav stretch tshaj 60,000 mais. Tus neeg laus yuav nyob ze dua 100,000 mais ntev . Muaj peb yam ntawm cov hlab ntsha : cov hlab ntsha, hlab ntsha, thiab capillaries.
Hais txog qhov no, koj lub paj hlwb nthuav tawm ntev li cas?
Qee qhov no yog cov paj hlwb. Peb yuav xav tau lub tshuab tsom iav kom pom lawv, tab sis lawv yog qee yam cov cov hlwb qub thiab ntev tshaj plaws hauv koj lub cev. Qhov tseeb, yog tias peb kab txhua tus cov leeg lub cev muaj, lawv yuav stretch rau yuav luag 45 mais.
koj cov hlab ntsha thiab cov hlab ntsha ntev npaum li cas? Qhov loj heev ntawm cov hlab ntshav - cov hlab ntsha , leeg , thiab capillaries - yog tshaj 60,000 mais ntev . Ntawd yog ntev txaus mus ncig thoob ntiaj teb ntau dua ob zaug!
Tom qab ntawd, lo lus nug yog, ntev npaum li cas cov hlab ntsha yuav xaus?
Yog hais tias koj yuav nteg tawm tag nrho cov hlab ntsha, capillaries thiab cov hlab ntsha nyob rau hauv ib tug neeg laus, kawg-rau-kawg , lawv yuav ncab txog 60, 000 mais (100, 000 kilometers).
Yuav ua li cas koj txheeb xyuas cov hlab ntsha thiab cov hlab ntsha?
Cov hlab ntsha yog cov hlab ntshav lub luag haujlwm nqa cov ntshav uas muaj oxygen nyob deb ntawm lub plawv mus rau lub cev. Cov leeg yog cov hlab ntsha uas nqa cov ntshav qis hauv cov pa oxygen los ntawm lub cev rov qab mus rau lub plawv rau reoxygenation.
Pom zoo:
Vim li cas cov hlab ntsha thiaj li tuab cov hlab ntsha?
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Cov hlab ntsha hlab ntsha thiab cov hlab ntshav muaj dab tsi?
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Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha?
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Vim li cas peb thiaj sau cov ntshav los ntawm cov hlab ntsha thiab tsis yog los ntawm cov hlab ntsha?
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Koj tuaj yeem qhia qhov sib txawv ntawm cov hlab ntsha thiab cov hlab ntsha li cas?
Cov hlab ntshav yog cov hlab ntshav ua lub luag haujlwm nqa cov pa oxygen ntau ntawm lub plawv mus rau lub cev.Cov leeg ntshav yog cov hlab ntshav uas nqa cov ntshav qis inoxygen los ntawm lub cev rov mus rau lub plawv forreoxygenation