Dab tsi yog cov yam ntxwv ntawm Axis?
Dab tsi yog cov yam ntxwv ntawm Axis?

Video: Dab tsi yog cov yam ntxwv ntawm Axis?

Video: Dab tsi yog cov yam ntxwv ntawm Axis?
Video: Xov Xwm 03/19/2022: Kay Yang Raug IRS/Nom Tswv Soj Ntsuam Los Ntawm Tej Nyiaj Pej Xeem Poob NtauNtau 2024, Lub Xya hli ntuj
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Cov axis yog tsim los ntawm lub cev pob txha, lub hauv paus hnyav, laminae, thiab cov txheej txheem hla, uas ua cov ntsiab lus txuas rau cov leeg. Cov axis articulates nrog lub atlas ntawm nws superior articular facets, uas yog convex thiab lub ntsej muag upward thiab sab nraud.

Tsis tas li ntawd, txoj haujlwm ntawm Axis yog dab tsi?

Cov axis yog qhov thib ob ntawm xya pob txha nyob rau hauv lub ncauj tsev menyuam nqaj qaum. Cov axis , tseem hu ua C2 pob txha, tsim cov pivot uas tso cai rau C1, lossis atlas, kom tig. Qhov kev txiav txim no muab lub taub hau thiab caj dab ntau dua ntawm kev txav ntawm ib sab mus rau ib sab.

Ib sab saum toj no, dab tsi yog qhov txawv ntawm lub atlas thiab axis? Cov atlas and axis muaj ntxiv nta uas cim lawv sib nrug ntawm lwm lub ncauj tsev menyuam vertebrae. Cov atlas yog thawj lub ncauj tsev menyuam nqaj qaum thiab hais tawm nrog lub occiput ntawm lub taub hau thiab axis (C2). Nws txawv ntawm lwm lub ncauj tsev menyuam vertebrae uas nws tsis muaj vertebral lub cev thiab tsis muaj cov txheej txheem spinous.

Ua li no, uas yog lub hauv paus tseem ceeb ntawm txoj kab nqaj qaum?

Cov axis yog qhov thib ob ncauj tsev menyuam , feem ntau hu ua C2 . Nws yog atypical ncauj tsev menyuam nrog tshwj xeeb nta thiab kev sib raug zoo tseem ceeb uas ua rau nws pom tau yooj yim. Nws qhov tseem ceeb tshaj plaws feature yog cov txheej txheem odontoid (los yog dens), uas yog embryologically lub cev ntawm lub atlas (C1) 1, 2.

Cov pob txha nyob qhov twg?

Anatomical cov ntsiab lus ntawm pob txha Nyob rau hauv lub cev, qhov thib ob lub ncauj tsev menyuam vertebra (C2) ntawm tus txha nraub qaum yog lub npe hu ua axis (los ntawm Latin axis , "qag") lossis epistropheus. Los ntawm atlanto-axial sib koom ua ke, nws tsim cov pivot raws li qhov uas thawj lub ncauj tsev menyuam vertebra (lub atlas), uas nqa lub taub hau, tig.

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