Taumahi me te hanganga o te kiko epithelial. Ko te hanganga o te kiko epithelial me tūhonohono

Papanga - he huinga o ngā pūtau, me te taonga intercellular. He āhuatanga noa o te hanganga, me te mahi i te taua mahi. I roto i te tinana o nga momo e whā o te kikokiko: epithelial, io, uaua, me te tūhonohono.

Ko te hanganga o epithelial kopa tangata me te kararehe meinga, te tuatahi o te katoa, tona localization. kiko epithelial Ko te papanga o ngā pūtau ngohi te nga integuments tinana, kiriuhi mucous o nga whekau, me te kōwhao rohe. Ano, i hanga te rota o te rino i roto i te tinana te epithelium.

āhuatanga General

he maha o ngā āhuatanga tūturu epithelium anake te hanganga o te kiko epithelial kua. Ko te āhuatanga matua ko e te papanga iho kua te ahua o te kahu tonu o ngā pūtau e te hunga i roto i te whakapā tata ki tahi i te tahi.

Epithelium ngohi te papa katoa i roto i te tinana, e te ahua o te hanganga, te mea i roto i te ate, repe taiaki, thyroid, repe salivary, me ētahi atu he mea he tautau o ngā pūtau. I roto i te take tuatahi e whakanohoia ki runga ki runga o te membrane basement wehe i te epithelium i te kiko tūhonohono. Ko reira he okotahi, ka kite te hanganga o te kiko epithelial me tūhonohono i roto i te horopaki o ratou pāhekoheko. I roto i ngā, i roto i te pūnaha lymphatic, te whakarerekētanga o ngā pūtau kiko epithelial me tūhonohono. ka karanga tenei momo o te epithelium te mohiotia.

High aravihi whakaora - ko tetahi āhuatanga o te epithelium.

pūtau pākoki o te kikokiko, meinga nei e te rerekētanga i roto i nga wahi basal me apical o te pokapū pūtau.

Ko te hanganga o te kiko epithelial ko te nuinga e tika ana ki tona tūranga rohe, e, i roto i te tahuri, hanga te epithelium ko te hononga nui i roto i te tukanga o te utu. whai wāhi ana tēnei kikokiko i roto i te absorption o ngā matūkai i te whēkau ki te toto, me te tīpona, mimi wehenga i roto i te epithelia tākihi me pera. I. koe e kore e hoki e taea e wareware e pā ana ki te mahi paruru, i te mea ki te te tiaki i te kopa i te pānga ino.

Ko te hanganga o te rauemi hanga i te membrane basement, whakaatu e kei reira he nui nui o mucopolysaccharides, me te he whatunga o fibrils pai.

Ka rite ki whakatakotoria kiko epithelial?

Āhuatanga o te hanganga o te kiko epithelial o kararehe, me te tangata e te nuinga fakahā atu e te meka i kawea tona whanaketanga i roto o te katoa e toru ngā paparanga iroriki. He āhuatanga anake o tenei momo o te papanga tenei āhuatanga. Ectoderm homai ara ki epithelium kiri, kōhao-waha, he wahi nui o te pū kai, taupoki io; kiriroto - te epithelium o te wahi gastrointestinal; me te kiriwai - te epithelium o nga whekau mimi me kiriuhi serous.

I roto i te whanaketanga embryonic tīmata ki te hanga i roto i te wāhanga tuatahi. Mai te hanganga o te nui rawaka o te kiko epithelial placental, ko reira te rōpū o te utu o matū i waenganui i whaea me te kukune.

Te whakaū i te tapatahi o te pūtau epithelial

He taea te pāhekoheko o tata pūtau i roto i te hanganga e tika ana ki te aroaro o desmosomes. Tenei hanganga maha motuhake rahi submicroscopic o, e ngā o rua haurua. Ia o ratou, thickening i etahi wahi, noho ana i te papa pātata o ngā pūtau tata. Ko te āputa wāwāhi-rite i waenganui i nga haurua o desmosomes he warowaihā puta taonga.

I roto i te wā i reira e whānui nga wāhi intercellular, e kei desmosomes i nga pito o anga kua ngawha cytoplasm ki whakapā pūtau. Ki te titiro tatou ki o ngawha i raro i te karu i te tokorua, ka kitea e koutou e whai ratou i te ahua o piriti intercellular.

I roto i te tapatahi whēkau he tui o iti tonu te e te hononga o kiriuhi pūtau o ngā pūtau pātata i te mara o te whakapā. Kei te maha nga wahi taua tuku ki mau papaa parau rite makatea.

He atu wā te wahi i reira he kore hanganga motuhake mō te tapatahi. Na ka whakapā tata pūtau e kawea atu e whakapā i waenganui i ngā mata flat pūtau parori ke ranei. kia imbricate nga taha o te pūtau inaki.

Ko te hanganga o te pūtau kiko epithelial

Ko te āhuatanga motuhake o te pūtau kiko epithelial ko te aroaro i runga i to ratou mata o te membrane wē.

Pūtau whai wāhi i roto i te tohanga o ngā hua pūkoro tinana i roto i te membrane wē o te wahi basal o te tinana pūtau kitea te kotuituitanga.

pūtau epithelial - te pera-ka karanga pūtaiao o te pūtau hanga te kiko epithelial. Āhuatanga o te hanganga, mahi o ngā pūtau epithelial e pā ana tata. Ko te kupu, kia rite ki te ahua o ratou hea i roto i te papa rawa, pūtoru me te hanga tīwae. I kaha euchromatin te matua, ko te kupu te mea he tae marama. Ko te matua o te pai nui, ōrite tona āhua i te āhua o te pūtau.

wehenga whakahuatia ai te wāhi o te karihi i roto i te wahi basal, he runga atu i taua nga pungaraungao, te taputapu Golgi me centrioles. I roto i ngā pūtau, te mahi secretory o te raveraa i rawa pai whakawhanakehia kiriuwhi me Golgi matatini. Epithelium ite nui pūtau kawenga mīhini i roto i to ratou pūnaha he ngangana motuhake - tonofibrils e e whakaratohia ki te tauārai tikanga ki te te tiaki i ngā pūtau ki deformation.

microvilli

Ētahi pūtau, ratou cytoplasm i runga i te mata kaua ranei e taea te hanga iti, whakahaua waho, growths - microvilli. E wātea ana i runga i te mata apical o te epithelium i roto i te kōpiro iti me te wahi matua o nga tubules ore o te whatukuhu te nui rawa o te kāhui. Nā ki te whakaritenga whakarara o te microvilli i roto i te ararewa roto o nga takai epithelium me tākihi paraihe rohe intestinal e hanga e, e taea te kitea i raro i te karu whārahi whatu. I roto i te tua, he maha o whākōkī te microvilli i roto i ēnei wāhanga i roto i.

whakarōpū

Āhuatanga o te hanganga o te kiko epithelial i roto i ngā wāhi rerekē tukua ki a tatou whakarōpū ratou i runga i te maha o te papa whenua.

Tei runga i te āhua o te pūtau epithelium e taea e porotakaroa, pūtoru, a flat, a ki runga ki te wāhi o ngā pūtau rānei - kotahi-apa, me te multilayer.

te huna hoki ano he epithelium glandular, kua whakamana i roto i te mahi secretory o te tinana.

He epithelium kotahi-apa

Ko te ingoa o te paparanga kotahi o te epithelium korero hoki ano: ko reira e kei nga pūtau katoa i runga i te membrane basement i roto i te apa kotahi. Ki te te āhua o ngā pūtau katoa ko te taua (arā. E. He isomorphic ratou) me te karihi pūtau kei i te taumata kotahi, mea e pā ana ki epithelia rarangi kotahi. Ki te kitea he pūtau monolayer epithelium whakarerekētanga o ngā āhua rerekē, e kei o ratou karihi i ngā taumata rerekē, reira anizomorfny epithelium pseudostratified ranei.

epithelium papanga

I roto i te epithelium kāhui tāngata anake te apa raro i roto i te whakapā atu ki te membrane basement me ētahi atu paparanga kei runga ake i te reira. He rerekē te āhua o te pūtau o ngā papa rerekē. Ko te hanganga o te kiko epithelial o tenei momo taea ki te tīpako i ngā momo o te epithelium kāhui tāngata i runga i te āhua me te huru rānei o te kahu waho o ngā pūtau: te keratinizing multilayer flat kāhui tāngata (unahi keratinized e wātea ana i runga i te mata), neorogovevayuschy maha.

He te epithelium tauwhirowhiro pera-ka karanga ngohi te nga whekau o te pūnaha puha. Runga anō i heke ranei te tinana e totoro ranei, riro te papanga he puka rerekē. Ko te kupu, thinning o epithelium kei roto i te āhua ki te hanga i rua ngā papa o ngā pūtau tōngāmimi kurut - basal me te uhi. A, no ka kōpeke te tōngāmimi te thickens (CONDENSED) puka epithelial kiko tino, pūtau paparanga basal he polymorphs me ko ratou te karihi i ngā taumata rerekē. pūtau Coverslips whiwhi he āhua pea me e ēnei i runga i ia atu.

Gistogeneticheskaja whakarōpū o epithelia

Ko maha te hanganga o te kiko epithelial o kararehe, me te tangata i te kaupapa o te rangahau pūtaiao me te hauora. I roto i enei take, te whakamahi gistogenetichekuyu whakarōpū tino maha whakawhanakehia e te N. academician G. Hlopinym. E ai ki reira, e rima ngā momo o te epithelium. Ko te paearu Ko te meka o te mea nga mea timatanga o te whakawhanake i te kopa i roto i embryogenesis.

1. momo Epidermal, kua te tīmatanga kua homai te ectoderm me pereti prechordal.

2. momo Enterodermalny, i tika ki te kiriroto intestinal te whanaketanga o nei.

3. momo Tselonefrodermalny, whakawhanakehia i te ararewa coelomic me nephrotomy.

4. momo Angiodermalny, tīmata te whanaketanga o nei i te wahi o te mesenchyme, hanga te endothelium iaia, e kiia nei ko angioblasts.

hoatu 5. momo Ependimoglialny, i timata te ngongo neural.

Āhuatanga o te hanganga o te kikokiko hanga repe epithelial

epithelium glandular mahi mahi secretory. Tenei momo o te papanga, ko te kohinga o glandular (secretory) pūtau i huaina granulocytes. Ratou mahi ko ki te whakatinana i te ariā me te noho wehe o ngā matū motuhake - ngaro.

He mea e tika ana ki te taea ki te mahi i maha ngā mahi nui te secretion o te tinana, ko te. Repe te huna hoki ngaro i runga i te kiri, me kiriuhi mucous, i roto i nga kōwhao o te maha o whekau, me te rite i roto i te toto me te te tīpona. I roto i te take tuatahi, ko tatou o te exocrine, me te tuarua - o nga repe endocrine.

secretion Exocrine taea ki te whakaputa i te waiu (te tinana wahine), pekitīlia me inu intestinal, huware, ate, werawera me te sebum. Secrets o repe endocrine he hormones e mahi ture humoral i roto i te tinana.

kia rerekē te hanganga o tenei momo o te kiko epithelial tika ki te meka e taea granulocytes te tango āhua rerekē. tei tenei i runga i te wāhanga secretion.

kia titoa rua momo o repe (endocrine me exocrine) o kotahi pūtau (pūtau kotahi) he plurality o ngā pūtau (multicellular) ranei.