Mutum kwanyar

Human kwanyar ne kwarangwal na kansa. Raba wannan kwarangwal a gaban kuma kwakwalwa sassa.

A fannin kwakwalwa a cikin nau'i na da shugaban kwarangwal kusa da ball. A tsarin wannan bangare kunshi biyu parietal, frontal, occipital, na boko, da kuma biyu da wasu kasusuwa da kwanyar mutum. By irin duk abubuwa ne isasshe m mai lankwasa faranti. Wadannan sune ake kira kashi lebur. Su aiki ne don tabbatar da kare kwakwalwa daga lalacewa.

Mutane daya-daya da abubuwa na kashi a cikin kwarangwal na shugaban tare ne da seams. Wannan hadin gwiwa da aka kira na kullum. Weld samuwar ne da za'ayi jagged gefuna biyu m abubuwa. A wannan yanayin, yanke daya daga cikinsu ya hada da wasu hakora.

mutum kwanyar a kwakwalwa rabo yana da wani gwada da santsi surface (gefen kuma saman). A tushe na kwakwalwa rufe da magudi da kuma daban-daban tsinkaya. Wannan shi ne saboda gaskiyar cewa mutum kwanyar a wannan wuri ne da alaka da tsoka zaruruwa. A tushe kuma yana da takware. Ta hanyar su wuce jijiyoyi da jini. Aƙalla a cibiyar rabo daga kwarangwal na shugaban ne a manyan bude (occipital), inda dangane ne da kwakwalwa da kuma laka.

A iyakar da gefen saman da tushe daga cikin kwanyar located auditory orifice (m). A kasa surface na occipital kashi memba yana articular matakai da karya a garesu na foramen magnum. Tare da wadannan matakai adam kwanyar da aka haɗa ta kashin.

A gaban yankin na kwarangwal na shugaban ya hada da wani biyu daga fitar kasusuwan jikinsu tsarin da abubuwa. Wadannan sun hada da maxillary, hanci, zygomatic, Palatine, da kuma sauran ƙasusuwa. Mandibular kashi kashi ne ba su guda biyu.

A gaban yankin na kwarangwal na shugaban ana shirya baki, hanci, da kuma ido kwasfa.

M buga wani m ciki. A shi ya ta'allaka da eyeball, kuma ta tsokoki, da jini da kuma jijiyoyi.

A hanci kogo yana buɗewa a cikin gaban bude a farfajiya na shugaban kwarangwal. Bayan hanci kogo aka haɗa ta pharynx ta hanyar biyu ramukan. A dama da hagu da rabi na kogo aka kafa ta partitions rarraba kashi. A kowace rabin hanci sassa da ake kafa ta uku ƙasũsuwa.

The baka rami ne rabu da hanci da taimako na Palatine kashi abubuwa da kuma matakai na maxillary kashi. A gefuna da ƙananan kuma babba jaws takura bakinka laterally.

The mutum kwanyar yana da guda sassa da kuma abubuwa na kwarangwal na dabbobi masu shayarwa kai. Duk da haka, wani muhimmin alama na shugaban kwarangwal na mutane sigar musamman sosai-raya bangaren kwakwalwa. A dabbobi masu shayarwa, da karin ci gaba ɓangare na gaba.

Da abubuwa da cewa yin up jariri mutum kwanyar a Jihar bai cika ossification. Suna hada da connective nama da kuma guringuntsi. Occipital, frontal kashi da sauran abubuwa dauke da dama aka gyara. A gefuna da abubuwa na kwarangwal da jariri ta kai babu hakora. Saboda haka, dangane da aka sanya ta wajen tube na connective membranes kuma babu seams. A wuraren da kafana kusassari da dama kashi abubuwa, widen membrane kafa fontanels.

Tare da ci gaban da yaron ya auku sanarwa akan abinda wasu kasusuwa da juna, da samuwar sutures, fontanelles overgrown. Saboda haka, a hankali kammala ossification tsari, ci gaban kashi fara.

A kwarangwal na kai, kamar yadda da kyau, da kuma dukan jiki, a dukan 'yan adam da aka canza. Saboda haka, tare da shekara talatin, kamar yadda mai mulkin, kan aiwatar da overgrowing gidajen abinci fara. Bayan kai da shekaru mutum, hakora fara fada fita da bace da cell a cikin abin da suke zaune.