Cov txheej txheem:
![Cov ntshav ntws hauv cov hlab ntsha mus rau qhov twg? Cov ntshav ntws hauv cov hlab ntsha mus rau qhov twg?](https://i.answers-medical.com/preview/medical-health/13927189-what-direction-does-blood-flow-in-an-artery-j.webp)
Video: Cov ntshav ntws hauv cov hlab ntsha mus rau qhov twg?
![Video: Cov ntshav ntws hauv cov hlab ntsha mus rau qhov twg? Video: Cov ntshav ntws hauv cov hlab ntsha mus rau qhov twg?](https://i.ytimg.com/vi/VuD9S-ktScc/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntshav Ntshav
Zoo li txhua yam kua, ntshav ntws los ntawm thaj chaw siab mus rau thaj av uas muaj kev siab dua. Ntshav ntws nyob hauv tib yam kev taw qhia raws li qhov txo qis siab gradient: cov hlab ntsha mus rau capillaries rau cov leeg.
Dhau li, cov ntshav ntws los ntawm cov hlab ntsha li cas?
Cov cov hlab ntsha nqa ntshav deb los ntawm lub plawv; cov leeg nqa nws rov qab rau lub plawv. Hauv kev ua haujlwm ntawm lub cev, sab laug lub ntsws tso cov pa oxygen ntau ntshav mus rau hauv lub ntsiab cov leeg (aorta) cov. Cov ntshav mus los ntawm lub ntsiab artery rau loj dua thiab me dua cov hlab ntsha thiab nkag mus rau hauv capillary network.
cov hlab ntsha twg nqa cov ntshav tawm lossis mus rau lub plawv? Lub circulatory system yog ua los ntawm ntshav laiv li nqa ntshav mus los ntawm thiab mus rau lub plawv . Cov hlab ntsha nqa ntshav tawm mus los ntawm plawv thiab cov leeg nqa ntshav rov qab mus rau lub plawv . Lub cev ua haujlwm nqa cov pa oxygen, cov as -ham, thiab cov tshuaj hormones rau hlwb, thiab tshem tawm cov khoom pov tseg, xws li carbon dioxide.
Ntawm no, cov ntshav ntws nrawm tshaj plaws nyob qhov twg?
Vim li no, cov ntshav txaus velocity yog ceev tshaj plaws nyob hauv nruab nrab ntawm lub nkoj thiab qeeb tshaj ntawm lub nkoj phab ntsa. Feem ntau, siv qhov nrawm nrawm.
Cov ntshav ntws sai hauv cov hlab ntsha lossis leeg?
Ntshav ntws nyob rau hauv cov lus qhia ib yam li qhov txo qis siab gradient: cov hlab ntsha mus rau capillaries leeg . Tus nqi, lossis tshaj tawm, ntawm ntshav txaus sib txawv inversely nrog rau tag nrho cross-sectional cheeb tsam ntawm lub cov hlab ntsha . Raws li tag nrho cov ntu ntu ntu ntawm cov hlab ntsha nce, qhov nrawm ntawm ntws txo.
Pom zoo:
Cov hlab ntsha hauv lub ntsws ntws mus rau qhov twg?
![Cov hlab ntsha hauv lub ntsws ntws mus rau qhov twg? Cov hlab ntsha hauv lub ntsws ntws mus rau qhov twg?](https://i.answers-medical.com/preview/medical-health/13814661-where-do-the-pulmonary-veins-drain-into-j.webp)
Cov hlab ntsws yog cov leeg ntshav uas xa cov pa oxygen los ntawm lub ntsws mus rau lub plawv. Cov hlab ntsws loj tshaj plaws yog plaub lub ntsws loj, ob los ntawm txhua lub ntsws uas ntws mus rau sab laug atrium ntawm lub plawv
Puas yog qhov txo qis ntshav ntws mus rau lub plawv tshwm sim los ntawm kev tsim cov rog rog hauv cov hlab ntshav?
![Puas yog qhov txo qis ntshav ntws mus rau lub plawv tshwm sim los ntawm kev tsim cov rog rog hauv cov hlab ntshav? Puas yog qhov txo qis ntshav ntws mus rau lub plawv tshwm sim los ntawm kev tsim cov rog rog hauv cov hlab ntshav?](https://i.answers-medical.com/preview/medical-health/13818893-is-the-result-of-reduced-blood-flow-to-the-heart-caused-by-the-build-up-of-fatty-deposits-in-the-arteries-j.webp)
Atherosclerosis (qee zaum hu ua 'hardening' lossis 'clogging' ntawm cov hlab ntsha) yog kev tsim cov roj (cholesterol) thiab cov rog tso (hu ua plaques) ntawm cov phab ntsa sab hauv ntawm cov hlab ntsha. Cov quav hniav no tuaj yeem txwv cov ntshav ntws mus rau cov leeg nqaij hauv lub cev los ntawm kev txhaws cov hlab ntshav lossis ua rau lub suab nrov txawv txav thiab ua haujlwm
Cov hlab ntsha qis hauv cov hlab ntsha ntws mus rau qhov twg?
![Cov hlab ntsha qis hauv cov hlab ntsha ntws mus rau qhov twg? Cov hlab ntsha qis hauv cov hlab ntsha ntws mus rau qhov twg?](https://i.answers-medical.com/preview/medical-health/13856266-where-does-the-inferior-thyroid-vein-drain-into-j.webp)
Brachiocephalic leeg
Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha?
![Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha? Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha?](https://i.answers-medical.com/preview/medical-health/14006555-which-neuroglia-form-the-blood-brain-barrier-in-the-central-nervous-system-j.webp)
Muaj plaub hom neuroglia pom nyob hauv nruab nrab lub paj hlwb: Astrocytes - tswj cov ntshav lub hlwb teeb meem thiab khaws cov tshuaj ib puag ncig los ntawm kev siv cov ions rov qab thiab cov tshuaj xa xov mus rau lub cev. Oligodendrocytes - myelinate axons nyob rau hauv lub hauv nruab nrab lub paj hlwb thiab muab tag nrho cov txheej txheem txheej txheem
Puas yog qhov txo qis ntshav ntws mus rau lub plawv tshwm sim los ntawm kev sib sau ntawm cov rog rog hauv cov hlab ntsha?
![Puas yog qhov txo qis ntshav ntws mus rau lub plawv tshwm sim los ntawm kev sib sau ntawm cov rog rog hauv cov hlab ntsha? Puas yog qhov txo qis ntshav ntws mus rau lub plawv tshwm sim los ntawm kev sib sau ntawm cov rog rog hauv cov hlab ntsha?](https://i.answers-medical.com/preview/medical-health/14093726-is-the-result-of-reduced-blood-flow-to-the-heart-caused-by-the-buildup-of-fatty-deposits-in-the-arteries-j.webp)
Atherosclerosis (tej zaum hu ua 'hardening' los yog 'clogging' ntawm cov hlab ntsha) yog tsim cov roj cholesterol thiab fatty deposits (hu ua plaques) nyob rau sab hauv phab ntsa ntawm cov hlab ntsha. Cov quav hniav no tuaj yeem txwv cov ntshav ntws mus rau cov leeg nqaij hauv lub cev los ntawm kev txhaws cov hlab ntshav lossis ua rau lub suab nrov txawv txav thiab ua haujlwm