He aha te mea te kiriwaho? Ko te hanganga o te kiriwaho

Ko te uhi tinana waho he hanganga tika matatini. Ko te kiri he he okana e ngā o rua papa. mahi te reira i te maha o ngā mahi nui: te utu, te whakahaere wera, receptor, paruru. fifili tokomaha te iwi he aha nga kiriwaho, engari wareware ratou mo te wāhanga tuarua o te kiri - te kiri.

Ko te hanganga o te taupoki tinana waho

Kei kiri o rua ngā papa - te kiriwaho me ākiri. wehea te paparanga epithelial o runga te i te Karekare raro pāhiwihiwi. meinga Ko tōna ahua e te aroaro i runga i te mata o te kiri o outgrowths motuhake - papillae. Ko te paparanga o runga ko tona epithelium papanga flat-keratinized. Kei reira kahore he oko toto, a ka tukua te mana kei te tukunga i te kiri anake.

Ka mahi ki te meka e te kiriwaho taua, kitea i roto i te wahi ko ia, Kei te timata maha ki te tango i te moni i roto i tona hanganga. Kei a ia ko ngā pūtau, rerekē i roto i te puka, me te hanganga. whakaata ratou he tetahi wāhanga o to ratou oraraa. Matotoru o te kiriwaho, i runga i tona wāhi kei taea e i 0,07 mm ki 1.4 mm. Ko te kahu e nui i runga i nga kapu o nga waewae, kapu o te ringa. He rawa kiri angiangi (tona apa o runga) kei roto i te rohe tore, i runga i nga ata horoia, taringa , me te puku.

Ko te hanganga o te taupoki i runga keratinized

Kei te kiriwaho o ngā papa takitahi e rima. i huaina Ko tōna wāhanga matua ko te keratinocyte. Ko te hanganga o te kiriwaho he uaua ake atu kia mea he i mawhiti tuatahi. te tāutu i ngā tohunga pērā paparanga:

• basal (germinative);
• koikoi;
• potakataka nei;
• anaana;
• horny.

Ia o ratou mahi i te mahi motuhake me te he ona ake hanganga.

He mea nui ki te mohio e te pūtau kiri kei roto i te āhua tonu o te whakahoutanga. Ko te paparanga whakamatauria tukanga uri, whāwhā, keratinization me desquamation. Tei runga i te rohe ngā o te tinana o oti tukanga whakahou epidermal kia tango 20 ki te 30 nga ra.

corneum whāriki

Ko te wahi o runga o te kiriwaho titoa e o pūtau e he whakapā feunga tata ki tahi i te tahi. Kei roto i te wāhanga whāriki corneum he arai kiri epidermal - he ratou huaina corneocytes. Kua ngaro ēnei pūtau kiri te organelles pūtau me e ki tonu i te keratin.

No te mea o tenei kia tiaki ratou i enei wae paparanga horny raro kikokiko i kino aunoa, rerekētanga pāmahana, whakamaroke me te kătahi o huakita. E wehea unahi horny ki e rua momo. Ka taea e ratou hei whakakī wewete mātotoru ranei o fibrils keratin. I runga i te mata tuarua he o ratou. He tuatahi kei ofi ange ki te paparanga potakataka. I roto i to ratou hanganga, e taea te kitea nga toenga o kei mua organelles pūtau reira. Kei te maha i huaina ēnei pauna T-pūtau.

Tenei kahu o runga o te kiriwaho ko te arai waihakihaki me ngā o te maha paparanga kua pūtau mate, e kua moe ki te lipids. Ratau, Ko enei matū kaitiaki taketake makuku i roto i te kiri.

paparanga pīataata

e kore e whakahuatia tonu tenei wahi o te kiriwaho. Kei te karanga a hoki reira paparanga eleidinovym. Ki te te kore kitea reira, ka rite te kikokore, marama, kanapa me te Unuhia ōrite titiro reira. i huaina Apa ko anake te mea o ratou ahua. Ko tōna whakauru ko te matū i huaina eleidin. Ko te hua-pūtake mō atu pūtau keratinization. Ite i te reira, te tikanga anake i roto i te kiri o kapu me kapu. Kei reira o te pūtau karihi-free papatahi.

paparanga potakataka

Ko te hunga e mahi ana ki te meka e kiriwaho tenei, kitea i roto i te wahi ko ia, ka mahara tona matotoru, matau e ia o ona wāhanga he iti. Ko te kupu, ko te kahu korakora tito o ngā pūtau 1-2 anake rarangi i roto i te hunga wāhi i reira he kiriwaho kikokore. Ko taea hoki ngā reira o te 10 nga rarangi o te pūtau i roto i aua wahi i reira ko atu mātotoru te kiri. E taimana-ahuahu, elongated, elongated me piri aki ki tahi i te tahi ratou. Kei roto i tenei pūtau paparanga kua ngaro ratou kaha ki te wehe. I roto i te cytoplasm reira e rua ngā momo o pire: lamellar me eleidin. E tū ratou kia neke te tuaka roa o ia pūtau taimana-āhua awaawa whakarara tipa ranei.

pūtau taratara

Ahakoa o te rohe wāhi o te kiri, ka mea ngā kahu o rarangi 5-10. Te kimi i roto i reira ko nga pūtau i roto i te puka o taparau. I Tirohia i raro i te karu, ka taea e kite koe i kore anake nga papa epidermal o te kiri, engari ano hoki ki te kite i te pūtau ratou, te Unuhia kuiti o te wāhi i waenganui ia ratou me nga tukanga mohio e whiti i te reira. ko Ngā mihi ki to ratou apa aroaro i koikoi.

E hono Keratinocytes i roto i tenei wahi o te desmosomes epidermal. E ratou he hanganga, kaua matatini: puta ratou rite paraharaha rua, a i waenganui e Ororongo ratou i waenganui i te pitoiho 4 me apa irahiko-mātotoru 3-mārama. desmosomes reira tautoko hanganga pūtau ā-, he ratou kaha pūhui tiai intercellular. mahi hoki ratou rite te wāhi whakapuru mo tonofilaments. Me kï reira e whakaritea te kiriwaho tangata e kia e heke nga wahi o runga paparanga spinous te maha o desmosomes.

hanganga pūtau haamana'oraa o te wāhanga o te tari basal. Otiia i te wa ano e rerekē ratou. hono tahi ngā pūtau taratara he maha nui o desmosomes me paihere tonofilaments ratou nui.

pūtau basal

Ko te tawhiti tino i te mata kiri tenei apa. Otiia tuku reira te taea ki te tino matau ki ta te kiriwaho. Ko te paparanga whakamutunga i runga i te paraharaha basal, e whakawhāiti reira i te tahi atu te kopa. Ko te pūtau reira whakaritea i roto i te rarangi kotahi. Apa e hanga e ratou, ano ka karanga Germinal. Kei roto te reira i te maha o ngā momo o ngā pūtau. He keratinocytes, melanocytes, lymphocytes, basophils kiko. ngā ano i roto i te apa Greenstein me Merkel pūtau.

Keratinocytes i roto i tenei paparanga titiro rite ipurau e tu poutū. wehewehe ratou e rua ngā momo: flat me zubchastoy mata. Kua wehea nga mea tuatahi, e tika ana ki puta ratou huringa pūtau. kaimahi te whakamutunga rite te mahi tārua. Ko e timata ratou ki te faaite i roto i tetahi kino ki te kiri.

Fully mahino ka matau te hanganga o te hanganga o te kiriwaho taea e, ki te matau koutou, e ko paku rerekē te hanganga o te wae paparanga basophilic. I tua atu me organelles me te karihi, e ahu ana ki te whai i te tahi atu pūtau katoa, he ratou hanganga motuhake - tonofilameny. He he ano hoki te whakaurunga motuhake, ka karanga granules melanin.

kia hoki tatou mea e te melanocytes - pūtau motuhake Ko te ahei o te whakaputa melanin. paruru tenei taonga ki pānga ino o te radiation hihi katinga. Ko te kahu basal o te tikanga o 10-25% o te pūtau. I roto i te ahua rite ratou he urchin moana , me te kei i waenganui i keratinocytes. E ai ki tona tukanga roa, he nehenehe o kawe melanin roto pūtau i te phagocytosis ratou.

E matau tenei mōhiohio katoa e pā ana ki te hanganga, ngā āhuatanga o te kahu o runga o te kiri, ka taea e koe te whakaaro he aha e hiahiatia ana te kiriwaho, te ara titiro ai me te mea kua.