Izicubu EPITHELIAL: at unogada umngcele

Lapho abantu bakhuluma ngokuthuthukisa lolu hlobo Indwangu, ngikhumbula ikakhulukazi esikhumbeni, nakuba nezicubu EPITHELIAL - kuba, isimiso, uhlobo "umngcele unogada". Yena bahlukana izitho, kuqukethwe indlela yokwakheka lwamafinyila. Heterogeneous EPITHELIAL izicubu, isakhiwo kanye umsebenzi zazo oxhumene ngendlela ekhethekile ohlotsheni lendwangu ngamunye. Mayelana nokuthi iziphi izinhlobo yokukhuluma? Funda kabanzi.

Sici esivamile zonke izinhlobo - amaseli in close contact nomunye, ngokuvamile ngongqimba, ngenxa umsebenzi okuvimbelayo izicubu EPITHELIAL. Futhi, zonke izinhlobo izicubu EPITHELIAL e ovamile uwukuthi izakhiwo eduze, basuke njalo ahlukaniswe ezicutshini - lokhu kumiswa libizwa ulwelwesi engaphansi.

Ngo epithelium jikelele ilula (isendlalelo esisodwa) kanye laminate (eziningana). Ngakho, ukwakheka kwezicubu EPITHELIAL zingase zihluke kakhulu.

epithelium Simple kungenziwa kancane isicaba shape. Lolu hlobo ibizwa ngokuthi i-squamous. Yena imigqa emaphashini, imithambo yegazi, izimbotshana inhliziyo. Futhi, lezi amaseli ezingqimbeni ongenhla isikhumba mucosa ngomlomo.

Akunzima ukuqagela ukuma amaseli cubic EPITHELIAL. La mangqamuzana atholakala nezindlala, Amapayipi, izindlala kanye tubules kwezinso. Ngaphezu kwalokho, bakha i-epithelium germinal e ezikhiqiza amaqanda abesifazane futhi amasende zabesilisa.

epithelium Prismatic ilula futhi egqinsiwe. Amaseli akheke imigoqo side. Nuclei kulezi amaseli "ocashe" engaphansi ulwelwesi eduze futhi kude ebusweni. Nokho, esiswini, obuso bakhe kwalokho zindlala, kuba esebenza kahle kakhulu - endaweni enobudlova kakhulu khona. Ezinye zalezi amaseli bayingxenye izitho sezinzwa - iphunga, ukunambitheka kanye ukuzwa.

Ciliated epithelium columnar has a neziqu ilolongwe ngokukhethekile ukuthi okusheshayo inamagquma bakwazi ukukhuthaza into esondelene nazo. Ngenxa yalokhu, "ukuphila" in the ekhaleni futhi ... kule amashubhu fallopian kwabesifazane, siyivumele ukuba ukukhuthaza amaqanda ukuze kwesibeletho.

epithelium yezindlala ngokuthi prismatic ehlanganisa amaseli secreting. Ngezinye izikhathi secreting amaseli ezingaphezu kuka columnar. Baphi amaseli ungakha imfihlo? Kuyinto emangqamuzaneni EPITHELIAL izicubu, esidlule indlela of lunye. Futhi "ochwepheshe" bona zingase zishintshe kakhulu. Engaged ekukhiqizeni ama-enzyme, amahomoni, ubisi, isikhwehlela, umjuluko, wax kanye ngamathe. Yiqiniso, konke lokhu izinto abakwazi ukukhiqiza owumphumela nezindlala, izindlala leli cala, ehlanganisa amaseli amaningi EPITHELIAL. A esitokisini olulodwa ngokuthi amaseli goblet. Ekuqaleni bebizelwa enterocytes, ngoba iningi la mangqamuzana e emathunjini amancane. Kodwa-ke kwathi zikhona kule conjunctiva esweni futhi umgudu wokuphefumula, futhi Amapayipi we nezindlala.

Lapho izinqubo okukhulu ukungezwani ubungozi bokulimala, umzimba yakha epithelium eziyinkimbinkimbi - isimiso njalo siqukethe izingqimba eziningana. Sikhuluma isikhumba mucosa ngomlomo. On the ngokusebenzisa amangqamuzana esikhumba somuntu ebusweni ngokufanele lapho amaprotheni multi-yi-keratin emlonyeni yi-keratin amaseli incane, ngakho-ke isikhumba thinta bese ulwelwesi lwamafinyila emlonyeni yehluke.

EPITHELIAL izicubu umsebenzi ihlukile kakhulu. Uhlu olungezansi akuyona full ngokuphelele.

Umsebenzi zokuzivikela. Epithelium kuvimbela umonakalo mechanical, amakhemikhali ukusha, aletha isithiyo ezifweni futhi livikela amaseli kusukela ukulahlekelwa amanzi iyini imbangela yalokho.

Umsebenzi emizweni: amaseli ezikhethekile EPITHELIAL ifomu izicubu izitho emizweni.

umsebenzi Secretory: kuchazwa ngokuningiliziwe esigabeni se-epithelium yezindlala.

Absorptive: e emathunjini amancane ngokusebenzisa epithelium we ukumuncwa kwezakhi Kwenziwa.

Excretion: umjuluko nezindlala secrete izinto engafuneki epithelium izinso futhi iyakhona iqhaza filtration, futhi kwakusekhona nokuhle reabsorption.

Diffusion: ngokusebenzisa epithelium mncane e ipheshana zokuphefumula emzimbeni futhi kusukela amagesi igcwale.

Ukuhlanza umsebenzi: umgudu epithelium ahlanze emoyeni ngothuli.

ngomshikisho encishisiwe: epithelium semithambo kunciphisa ukuxabana phakathi odongeni umkhumbi amaseli weengazi.

Njengoba ubona, eziningi imisebenzi, ngoba izinhlobo eziningi. Ulwazi oluningi mayelana nalolu uzofunda e izincwadi ezinhle Histology.