Cov txheej txheem:
![Lub luag haujlwm ntawm venous system yog dab tsi? Lub luag haujlwm ntawm venous system yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13995985-what-is-the-function-of-the-venous-system-j.webp)
Video: Lub luag haujlwm ntawm venous system yog dab tsi?
![Video: Lub luag haujlwm ntawm venous system yog dab tsi? Video: Lub luag haujlwm ntawm venous system yog dab tsi?](https://i.ytimg.com/vi/mOJpmF2h2FU/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Qhov tseem ceeb ntawm cov hlab ntsha
Hauv kev sib piv, txoj haujlwm ntawm cov hlab ntshav yog thauj cov deoxygenated ntshav los ntawm lub cev rov qab mus rau lub plawv thiab txij ntawd mus rau qhov lub ntsws.
Yog li ntawd, dab tsi yog lub luag haujlwm tseem ceeb ntawm cerebral venous ncig?
Cerebral ncig yog cov ntshav ntws hauv koj lub hlwb . Nws yog tseem ceeb rau noj qab nyob zoo lub hlwb ua haujlwm . Circulating ntshav muab rau koj lub hlwb nrog rau cov pa oxygen thiab cov as-ham nws xav tau muaj nuj nqi kom raug. Ntshav xa oxygen thiab piam thaj rau koj lub hlwb.
Tsis tas li, dab tsi yog qhov ua haujlwm ntawm cov hlab ntsha thiab cov leeg? Cov hlab ntsha tau pom tias yog nqa cov pa ntshav mus rau cov ntaub so ntswg, thaum cov hlab ntsha nqa cov ntshav deoxygenated rov los rau hauv plawv. Qhov no yog qhov tseeb ntawm qhov systemic ncig, nyob deb ntawm qhov loj ntawm ob lub voj voog ntawm cov ntshav hauv lub lub cev , uas thauj cov pa oxygen los ntawm lub plawv mus rau cov ntaub so ntswg ntawm lub cev.
Ntawm no, 3 hom hlab ntsha yog dab tsi?
Muaj peb hom tseem ceeb ntawm cov hlab ntsha:
- Cov hlab ntsha. Lawv nqa cov ntshav uas muaj pa oxygen tawm ntawm lub plawv mus rau tag nrho lub cev nqaij daim tawv.
- Capillaries. Cov hlab ntshav me no txuas cov hlab ntsha thiab cov leeg.
- Cov leeg. Cov no yog cov hlab ntshav uas coj ntshav rov mus rau lub plawv.
Cov ntshav mus rau lub hlwb li cas?
Ntshav yog muab rau tag nrho lub hlwb los ntawm 2 khub ntawm cov hlab ntsha: sab hauv cov hlab ntsha carotid thiab cov hlab ntsha vertebral. Cov hlab ntsha basilar koom nrog ntshav muab cov hlab ntsha hauv carotid nyob rau hauv ib lub nplhaib ntawm lub hauv paus lub hlwb.
Pom zoo:
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Cov khoom siv hauv lub cev zom zaub mov suav nrog cov hniav, tus nplaig, cov qog ua kua qaub, daim siab, lub zais zis, thiab txiav txiav. Txhawm rau ua tiav lub hom phiaj ntawm kev muab lub zog thiab khoom noj khoom haus rau lub cev, rau lub luag haujlwm tseem ceeb nyob hauv cov txheej txheem zom zaub mov: nqos. Kev zais. Sib tov thiab txav mus los. Digestion. Kev nqus. Kev tshem tawm
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Lub luag haujlwm txoj haujlwm: Txheeb xyuas thiab faib tshuaj raws li daim ntawv yuav tshuaj. Xyuas kom tus neeg mob kos npe rau daim ntawv yuav tshuaj thiab sau nqi raws li xav tau. Txhawm rau khaws cov khoom faib tawm thiab tswj cov khoom lag luam kom zoo ntawm ob qho tshuaj thiab ntim khoom
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Lub voj voog ntawm Willis yog lub nplhaib zoo li cov hlab ntsha uas nyob ntawm lub hauv paus ntawm lub hlwb uas muab cov ntshav mus rau lub hlwb thiab cov qauv nyob ib puag ncig. Nws yog ib feem ntawm kev ncig lub paj hlwb thiab suav nrog tsib leeg
Dab tsi yog lub luag haujlwm ntawm lub hauv nruab nrab lub paj hlwb thiab lub paj hlwb ib leeg?
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Lub paj hlwb sab hauv suav nrog txhua lub paj hlwb hauv lub cev uas nyob sab nraud ntawm tus txha caj qaum thiab lub hlwb. Cov hlab ntsha no nqa cov ntaub ntawv mus rau thiab los ntawm lub hauv nruab nrab lub paj hlwb kom muab txoj haujlwm ntawm lub cev. Sensory hlwb koom nrog hauv kev noj cov ntaub ntawv los ntawm lub periphery mus rau hauv nruab nrab lub paj hlwb
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Raws li ib feem ntawm pab pawg, tus kws kho mob lub plawv tsis ua haujlwm tau zoo muab rau muab kev pabcuam rau cov neeg mob thoob plaws txoj kev mob plawv tsis ua haujlwm thiab qhov no yuav tsum muaj kev koom tes ze nrog kws saib xyuas mob hauv thaj chaw tshwj xeeb tshwj xeeb xws li chav kho mob xwm txheej ceev thiab kev kho mob dav/ saib xyuas-ntawm-tus-neeg laus