Izingebhezi Namathambo

bloodygorgeous

Iqukethe izikhangiso

Mayelana nalolu hlelo lokusebenza

Ukhakhayi (i-cranium) luhlelo oluqinile lokuvikela amathambo oluzungeze ubuchopho. Lakhiwe ngamathambo ahlukene ayi-8. Ukwakheka kwethambo kogebhezi kuhlukile. Izinhlanganisela zamathambo zinesakhiwo esi-indenti. Isizathu ukuthi amaphuzu okuhlangana kwamathambo ogebhezi aklanyelwe ukudlula komunye nomunye. Umhlathi kuphela odlala kugebhezi. Amanye amathambo awadlali.

Inesakhiwo esinzima kakhulu futhi esiqinile kumuntu omdala. Kodwa-ke, umntwana osanda kuzalwa unesakhiwo esihluke ngokuphelele. Ukhakhayi lwengane, oluphuma esizalweni sikanina, alukaphenduki ithambo futhi lunesakhiwo esithambile. Ngaphezu kwalokho, la mathambo ayi-8 akha ugebhezi awazange ahlangane ngokuphelele. Izikhala (fontanelle, fontanel) zakhekile phakathi kwezindawo lapho kuhlangana khona amathambo. Yize kungabonakala njengokubi ekuqaleni nje, empeleni kuyisici esisindisa impilo yengane lapho izalwa. Ukube ikhanda lengane lalinesakhiwo esiqinile samathambo futhi kwakungekho zikhala phakathi, amathuba okuthi ikhanda lengane lichotshozwe ngesikhathi sokuzalwa laliyoba likhulu kakhulu. Kodwa-ke, ngenxa yoqwanga nesakhiwo esithambile esakha amathambo ogebhezi ezinganeni, amathambo athola ukuguquguquka futhi abe namandla okugoba nokusonta. Kepha ukwelula nje kusobala akwanele. Isikhala naso siyadingeka ukuze ukhakhayi lweluleke. Le ndawo iyisikhala sokhakhayi esingavaliwe ngokuphelele ngesikhathi sokuzalwa. Amathambo ogebhezi acindezelwe, kugcwalisa isikhala phakathi kwawo. Baze basukume babhekane. Ngakho-ke, ivolumu yekhanda nayo iyancishiswa. Ngale ndlela, ingane izalwa ngendlela enempilo ngokudlula emgodini wokuzalwa, oyingxenye yevolumu yekhanda. Ingxenye ephezulu kakhulu yamathambo kuma-vertebrate; Inquma ukwakheka kwekhanda futhi ivikele izitho ezingaphakathi. Ithambo yizicubu ezinzima kunazo zonke ezakha umzimba. Kuyizicubu ezisebenza njengokwesekwa kwangempela emzimbeni. Futhi yizitolo ze-calcium zomzimba. Zinzima ngoba zigcwele i-calcium. Yize zilukhuni, umehluko wazo kuzicubu ze-cartilage ukuthi ziqukethe izitsha. Kunezinhlobo ezahlukahlukene zamaseli (ama-osteocyte, ama-osteoblasts, ama-osteoclasts) nezinto eziphakathi kwamaseli (matrix) kulesi sakhiwo sezicubu. Lapho kuhlolwa ingxenye yethambo enqamulelayo, ingaphandle layo nangaphakathi limbozwe ulwelwesi. Ngaphandle kwalokhu; i-periosteum, kuya kuleyo engaphakathi; okuthiwa i-endosteum. Lezi zingqimba zenziwe ngezicubu ezixhuma ngokungajwayelekile ezingajwayelekile. Ngaphansi nje kwe-periosteum kunohlelo lwangaphandle lwe-annular. Ngenhla nje kwe-endosteum kunohlelo lwangaphakathi lwe-annular. Ama-osteons, aziwa nangokuthi amasistimu aseHaversian, agcwalisa phakathi kwezinhlelo zangaphakathi nezangaphandle zonyaka. Maphakathi kwama-osteon kukhona imisele yaseHaversian, lapho kudlula khona imithambo yegazi. Imisele yaseHaversian engomakhelwane iyahlangana ngemigwaqo iVolkmann. Amathambo omuntu omdala aqukethe amathambo angama-207. Kodwa umntwana osanda kuzalwa unamathambo acishe abe ngama-300. Isizathu salo mehluko ukuvela kwamathambo amasha njengoba amathambo ehlangana ngokuhamba kwesikhathi lapho umuntu eba mdala.

Sicela ukhethe izingebhezi ozithandayo namathambo lodonga bese ulibeka njengesikrini sokukhiya noma isikrini sasekhaya ukuze unikeze ifoni yakho ukubukeka okuvelele.

Siyabonga ngokuxhaswa kwakho okuhle futhi samukela njalo impendulo yakho mayelana nezingebhezi & amathambo yamaphephadonga.