![Cov yam ntxwv sab nraud ntawm tus txha nqaj qaum yog dab tsi? Cov yam ntxwv sab nraud ntawm tus txha nqaj qaum yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13942038-what-are-the-external-features-of-the-spinal-cord-j.webp)
Video: Cov yam ntxwv sab nraud ntawm tus txha nqaj qaum yog dab tsi?
![Video: Cov yam ntxwv sab nraud ntawm tus txha nqaj qaum yog dab tsi? Video: Cov yam ntxwv sab nraud ntawm tus txha nqaj qaum yog dab tsi?](https://i.ytimg.com/vi/COlUOP4Bpow/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov hauv qab no yog cov yam ntxwv sab nraud ntawm tus txha nqaj qaum (saib daim duab 1): qaum paj hlwb tshwm nyob rau hauv khub, ib tug los ntawm txhua sab ntawm lub tus txha nqaj qaum raws nws ntev. Cov ncauj tsev menyuam qab haus huv tsim plexus (txoj kev sib cuam tshuam sib txuas ntawm cov hlab ntsha-hlab ntsha sib tshuam thiab ceg ntoo).
Ua raws li qhov no hauv kev xav, dab tsi yog qhov tseem ceeb ntawm tus txha caj qaum?
Tus txha caj qaum yog ib tug cylindrical qauv ntawm lub paj hlwb muaj li ntawm dawb thiab grey teeb meem, yog uniformly teem thiab muab faib ua plaub lub cheeb tsam: ncauj tsev menyuam (C), thoracic (T), lumbar (L) thiab sacral (S), (Daim duab 3.1), txhua qhov uas suav nrog ntau ntu.
Ib yam li ntawd, tus txha caj qaum expansion yog dab tsi? Cov txha nqaj qaum nthuav dav uas sib haum mus rau caj npab yog hu ua ncauj tsev menyuam kev nthuav dav thiab suav nrog qaum ntu C5-T1; cov nthuav dav uas haum rau ob txhais ceg hu ua lumbar enlargement thiab suav nrog tus txha nqaj qaum ntu L2-S3.
Ntxiv mus, dab tsi yog qhov ua haujlwm ntawm tus txha caj qaum?
Nws peb lub luag haujlwm tseem ceeb yog txhawm rau xa cov lus ntawm lub hlwb mus rau ntau qhov chaw ntawm lub cev, ua haujlwm, hla cov lus los ntawm kev xav receptors rau lub hlwb, thiab ua kom muaj kev cuam tshuam uas tau tswj los ntawm tus txha nqaj qaum ib leeg.
Qhov chaw ntawm tus txha caj qaum yog dab tsi?
Tus txha caj qaum yog nyob rau hauv lub vertebral foramen thiab yog ua los ntawm 31 ntu: 8 lub ncauj tsev menyuam, 12 thoracic, 5 lumbar , 5 sacral thiab 1 coccygeal. Ib khub ntawm cov leeg txha nqaj qaum tawm txhua ntu ntawm tus txha nqaj qaum.
Pom zoo:
Dab tsi ntawm sab laug ntawm tus txha nqaj qaum muaj cov lus nug?
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Qhov nruab nrab ntawm lub paj hlwb ntawm tus txha caj qaum muaj: lub cev ntawm lub cev tsis muaj zog lub cev muaj zog neurons. Cov qauv no muaj axons tsis sib xws thiab ua haujlwm sib txuas lus ntawm sab xis thiab sab laug ntawm qhov teeb meem grey hauv tus txha caj qaum
Cov txheej txheem ntawm tus txha nqaj qaum yog dab tsi?
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Nws tau ua los ntawm peb txheej, uas los ntawm sab nraud mus rau sab hauv (piv txwv li cranium/vertebrae rau lub hlwb/txha caj qaum) yog: dura mater, arachnoid mater, thiab. pia mav
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Thoob plaws tebchaws, Kev Nyab Xeeb Kev Ruaj Ntseg, Kev Tshaj Tawm Ntxiv, Qhib Siab, Pom Zoo, thiab Kev Ntseeg Siab tau nce zuj zus txij thaum ntxov txog rau nruab nrab neeg laus. Zoo ib yam nrog kev sib raug zoo hauv kev xav, pab pawg pom tias kev loj hlob ntawm tus kheej tau tshwm sim ua ntej hauv kab lis kev cai nrog kev pib ua ntej ntawm cov neeg laus lub luag haujlwm
Yam twg ntawm cov hauv qab no yog tus yam ntxwv ntawm kev tsis sib haum xeeb ntawm tus kheej?
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Cov cim qhia txog kev tsis sib haum xeeb ntawm tus kheej tsis muaj kev txhawj xeeb, kev tu siab lossis kev tu siab txog lwm tus neeg txoj kev ntxhov siab. coj tus cwj pwm irresponsibly thiab qhia tsis quav ntsej rau ib txwm coj cwj pwm. muaj teeb meem txhawb kev sib raug zoo mus ntev. tswj tsis tau lawv txoj kev npau taws
Dab tsi yog cov khaubncaws sab nraud povtseg ntawm lub nraub qaum ntawm lub qhov quav saum toj ntawm kab arcuate?
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Sab saum toj ntawm txoj kab arcuate, lub qhov quav ntawm lub plab yog nyob ib puag ncig los ntawm txheej txheej sab nrauv ntawm lub qhov quav thiab ib txheej tom qab. Lub anterior txheej yog muab los ntawm sab nraud oblique aponeurosis thiab anterior lamina ntawm sab hauv oblique aponeurosis