Cuneiform kashi na ragargaje. Description.

A sandan-dimbin yawa kashi dake cikin cibiyar na da kwanyar tushe. Its rawa ne don ƙirƙirar wani sa na gefen bangon daga cikin kwanyar, ramukan da kuma cavities (kwakwalwa da kuma gyara man fuska). Cuneiform kashi ne hadaddun form. Wannan kashi da aka hada da wani jiki da uku nau'i-nau'i daga appendages, fuka-fuki (manya da kanana), da reshe-dimbin yawa appendages.

Cuneiform kashi na kwanyar - Description

A jikin sphenoid kashi kama wani sababbu siffar da lissafi jiki - da shigen sukari. Ciki shi ne sphenoid sinus (rami). Bugu da kari, da occipital kashi yana da mahara saman, duk su - Shida: kwakwalwa, baya (a cikin manya da shi ne shigeba, to a core ɓangare na kashi, da gaban (da shi ya wuce smoothly a cikin ƙananan surface), biyu gefen.

A rarrabe da kwakwalwa (babba) surface na sako da aka alama kamar yadda "Turkish sirdi". A cikin hedkwatarsu da yake da pituitary fossa. Shi ne da pituitary gland shine yake. A gaban sako ne sirdi lobe da ciwon kaikaice tsari. A baya wurin zama ne quite high. A kaikaice rabo daga backrest samar karkata raya appendages. A kasa na baya "Turkish sirdi" a garesu daga cikin hanya tsagi. Haka kuma an kira "barci", saboda an located carotid jijiya. A cikin matsanancin gefen, a kusa da baya carotid furrows yana da wani sandan tab. Wannan inganta canji harshe tsagi zurfin tsagi. A tsagi, a tare da tare da tip na dala haikali kashi, a tasha rami somnolence. Bayan barci ciki rami a girman kwanyar rami na somnolence tashar kofofi ciki carotid jijiya.

Sphenoid kashi, wato, da gaban wani ɓangare na da surface, yana da wani elongated siffar da yayi kama da tsefe. Tsefe a cikin nau'i na kaifi keel zo zuwa kasa surface haɗa zuwa ga farantin ethmoid kashi. A kowane gefe na kunya ana shirya kashi faranti na sababbu siffar. Sun iyakance takware nufin a pneumatic sandan-dimbin yawa kogo. Kaikaice jirgin sama na sphenoid kashi zuwa gaban da kuma kasa daga cikin izinin a kananan da manyan fikafikai.

Kananan reshe - wani tururi farantin tsawaita daga sphenoid kashi jiki ta biyu tafiyar matakai, tsakanin wanda na gani tashar. A gaban gefuna da fuka-fuki ne kananan irin chipping. Wadannan gefuna an haɗa ka da orbital ɓangare na da frontal kashi da wani farantin daga cikin ethmoid kashi. A na baya gefen fuka-fuki ne free of kananan, su surface ne m. A kowane daga gefen tsakiyar fuka-fuki located agara tsari. Don gaba da na baya aiwatar increments wuya harsashi na kwakwalwa.

Manyan reshe ne guda biyu. Ya fara da wani m tushe na gefen surface na sandan-dimbin yawa jiki. Kowace daga cikin fuka-fuki a gindi yana da uku takware. Ta hanyar daya budewa, wanda aka located sama da sauran, hawa reshe na trigeminal jijiya. A tsakiyar reshe yana da wani rami ga nassi na wani daga cikin trigeminal jijiya. Ta hanyar takware a raya reshe kwana zone ratsa cikin kwanyar meningeal jijiya. Manyan reshe yana da wadannan saman: na boko, maxillary, orbital da kuma kwakwalwa.

Scion wani reshe (ya kuma ya maimaita) kara daga kashi jiki a shafin na farkon da manyan reshe zuwa ƙasa tsaye. Akwai biyu faranti na pterygoid tsari: tsakiya kuma a kaikaice. Tsakiya farantin directed zuwa cikin hanci kogo, da kuma a kaikaice - zuwa infratemporal fossa. Front farantin spliced tare. Bayan da farantin diverge samar da wata reshe tare da wani rami. The biyu faranti aka raba a kasa na tsare-sare. Tsakiya farantin ne dan kadan ya fi tsayi, kuma narrower fiye da a kaikaice.

Sphenoid kashi fara solidify a tara sati na fetal ci gaba.