KARYA KYAUTA da Yankewa ga Jigilar Gargajiya

Yankin kashin kashin ya isa daga tushe daga kwakwalwa zuwa game da juyawa daga kashi na 12 da zuwa kashi na 1 lumbar vertebrae; Tsawanta zuwa ƙasa ana kiranta filamental tashar, wanda ke a ƙasa zuwa haɗakar coccyx. Maganin kashin baya yana da hanyar canji na tsakiya, tsawan zuwa ƙasa na ventricles na kwakwalwa; a ƙasa, a cikin amfrayo, wannan canal ya kai ƙarshen ƙarar filament, amma a cikin manya yakan zama ya kumshe cikin filati kuma ya ɓace fiye ko inasa, da gudu mutane.

An kasha kashin kashin kasha zuwa kashi biyar: kashin mahaifa, dorsal, da lumbar vertebrae, da sacrum da coccyx. Tsarin ƙwanƙwasa da kuma nau'in vertebrae suna haifar da buɗewa a ɓangarorin biyu ta hanyar abin da ke motsa jijiyoyin jijiyoyin wuya a wuyansa, gangar jikin, da na sama da na ƙarshe, (Sif. VI-A, b).