Msana, ndi ntchito zawo

msana munthu limagwirira zovuta, pogwiritsa ntchito olondola a potsata kugwira ntchito kwa ziwalo zonse.

Msana zikuphatikizapo vertebrae 32-33: (. 3-4 ma PC) khosi (7. Ma PC), m'mawere (. 12 ma PC), lumbar (. 5 ma PC), Sacral (. 5 ma PC) Ndipo coccygeal. Kodi lili pakati pa vertebrae zimbale intervertebral (23 ma PC.). Vertebrae amapanga m'madera osiyanasiyana a msana.

vertebrae The likugwirizana ndi mzake mitsempha-akulu zida, intervertebral zimbale, mafupa. Zonsezi amatilola kugwira msana mu malo olungama ndiponso kupereka ndi kusinthasintha zofunika mu kusuntha. Chibadidwe zotanuka zimatha zimbale intervertebral ali kwambiri kufewetsa zodabwitsa ndi jerks poyenda, kulumpha ndi kuthamanga, zomwe zimafalitsidwa kwa ubongo ndi msana.

msana

msana wapangidwa ndi khomo lachiberekero, thoracic, lumbar, sacrum ndi coccyx.

Khomo lachiberekero msana amanena kuti magulu chapamwamba cha ndime msana. Iwo kusiyana ndi kuyenda wapadera kuti amalenga ufulu ndiponso zosiyanasiyana kayendedwe mutu. Chapamwamba khomo lachiberekero vertebrae, wotchedwa Buku la mapu ndi olamulira, ndi chibadidwe kapangidwe anatomical, amene isiyana ndi ena kapangidwe ka vertebrae lapansi. Atlas ndi olamulira udindo kuweramira ndi atembenuza mutu wa munthu.

Thorax ndi udindo pachifuwa malo ziwalo zofunika kwambiri, chifukwa ichi ndi wofooka. Kuti izo amagwira m'mbali (12 awiriawiri).

The lumbar msana tichipeza vertebrae mokwanira chachikulu, chifukwa iwo ali pansi katundu wamkulu. Anthu ena asanu lumbar vertebrae. chodabwitsa woteroyo mankhwala otchedwa lyumbalizatsiey. 8-10 vertebrae zikulire pamodzi kupanga msana sacral.

The linkawonongeka ali ndi thupi, ndi Arc, miyendo iwiri, bearded, awiri yopingasa ndi njira zinayi articular. The ngalande msana aumbike pakati pa mipata ya Chipilala vertebral, vertebral thupi ndi miyendo.

Pakati zoyandikana vertebrae ali intervertebral chimbale, ndilo annulus fibrosus ndi phata pulposus. Iwo amachita ntchito ya depreciation, deduction wa vertebrae pafupi, kuonetsetsa sayenda awo. Phata ndi unazunguliridwa mu mphete fibrous, kusunga pachimake pakati ndi kupewa kutsetsereka wa vertebrae lapansi.

The annulus fibrosus imakhala ndi kuchuluka kwa zigawo ndi ulusi amene anawoloka mu ndege atatu. Pamene osteochondrosis ulusi anulus m'malo ndi minofu yovulazidwa, amene angathe amayambitsa chophukacho wa mphete fibrous ndi mapangidwe chimbale herniation.

m'madera onse a msana zili ndi zida ligamentous. Vertebral gawo - awiri vertebral litayamba ndi Mitsemphayi.

chingwe msana ili mu ngalande msana, komanso mizu ya otchedwa "mchira akavalo". Msana kumayambira dera oziziritsa ndi chimafikira kwa woyamba ndi wachiwiri lumbar vertebrae.

chingwe msana, kutengera kumadera onse a msana, wazunguliridwa ndi yovuta, zofewa ndi arachnoid ndipo anakakonza mu ngalande msana, ndi CHIKWANGWANI mizu.

Nthambi ku msana mitsempha mizu (31 awiriawiri) kuti utuluke mwa intervertebral (foraminarnyh) msana orifices ngalande.

Man, ngati inakhala ena, ali segmental innervation ya thupi, mwachitsanzo, aliyense wa zigawo za chingwe msana udindo chiwalo ena.

Mwachitsanzo, khosi ndi manja innervate zigawo zokhudzana msana khomo lachiberekero, chifuwa ndi pamimba - ndi thoracic, sacral gawo innervates mapazi, perineum, ndi rectum ndi chikhodzodzo.

Mu chingwe msana pali thickening wa khomo lachiberekero ndi lumbar. Herniated zimbale mu msana khomo lachiberekero ndi woopsa kwambiri kuposa mu lumbar lapansi.

M'njira imene m'dera anati motility ndi tcheru matenda, dokotala nthawi zonse ndikulingalira kumene kuwonongeka inkachitika, ndi ati a msana anakhudzidwa.