Video: Cov hlab ntsha twg cov ntshav siab mus txog qhov ntsuas siab tshaj plaws?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Loj cov hlab ntsha tau txais qhov siab tshaj plaws ntawm cov ntshav khiav thiab yog cov tuab thiab elastic kom haum raws li qhov siab. Me dua cov hlab ntsha , xws li cov hlab ntsha, muaj cov leeg du uas sib cog lus lossis so kom tswj tau cov ntshav ntws mus rau qee qhov ntawm lub cev.
Ntxiv mus, nyob rau hauv cov hlab ntsha hauv qab no yog cov ntshav siab tshaj plaws?
Ntshav siab tuaj yeem txhais tau tias yog ntshav siab ntawm phab ntsa ntawm cov hlab ntshav thaum nws ncig thoob plaws lub cev. Ntshav siab siab tshaj plaws thaum nws tawm hauv plawv los ntawm aorta thiab maj mam txo qis thaum nws nkag mus rau cov hlab ntsha me thiab me dua (cov hlab ntsha, cov hlab ntsha thiab capillaries).
Qhov thib ob, yuav ua li cas rau cov hlab ntsha thaum muaj ntshav siab? Cov hlab ntsha puas los ntawm ntshav siab tuaj yeem nqaim, tawg lossis xau. Ntshav siab tuaj yeem ua rau ntshav clots rau daim ntawv hauv cov hlab ntsha ua rau koj hlwb, thaiv ntshav ntws thiab muaj peev xwm ua rau mob stroke.
Puas yog ntshav siab hauv capillaries siab lossis qis?
Zoo li txhua yam kua, ntshav ntws los ntawm a siab siab cheeb tsam mus rau cheeb tsam nrog qis dua . Ntshav ntws nyob rau tib txoj kev qhia raws li qhov txo qis siab gradient: hlab ntsha cov hlab ntsha rau cov leeg. Tus nqi, lossis tshaj tawm, ntawm ntshav ntws sib txawv inversely nrog rau tag nrho cross-sectional cheeb tsam ntawm lub ntshav cov nkoj.
Puas yog ntshav siab ua rau koj cov leeg tawm?
Ua kom ntshav siab ntxiv Qhov no ua rau koj cev kom nthuav dav, txhim kho leeg txhais, tshwj xeeb tshaj yog thaum lub sij hawm siab -kev ua haujlwm nruj. Siv ceev faj thaum nqa qhov hnyav lossis tawm dag zog yog tias koj tsis tau tswj hwm ntshav siab.
Pom zoo:
Cov hlab ntsha qis hauv cov hlab ntsha ntws mus rau qhov twg?
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Cov hlab ntsha twg nyob rau hauv cov ntshav siab tshaj plaws?
Ntshav siab tuaj yeem txhais tau tias yog ntshav siab ntawm phab ntsa ntawm cov hlab ntshav thaum nws ncig thoob plaws lub cev. Cov ntshav siab siab tshaj plaws thaum nws tawm hauv lub plawv los ntawm aorta thiab maj mam txo qis thaum nws nkag mus rau cov hlab ntsha me thiab cov hlab ntsha me me (cov hlab ntsha, cov hlab ntsha, thiab cov hlab ntsha)
Dab tsi yog qhov kev txiav txim ntawm cov hlab ntsha los ntawm qhov tsawg tshaj plaws mus rau qhov loj?
Cov hlab ntsha loj tshaj plaws yog vena cava qis dua, uas nqa ntshav los ntawm lub cev qis mus rau lub plawv. Lub superior vena cava coj cov ntshav rov qab mus rau lub plawv los ntawm lub cev sab saud. Capillaries yog cov hlab ntsha me tshaj plaws. Lawv txuas cov hlab ntsha me me thiab cov leeg