Ectoderm - apa uri waho tenei

Ko te ectoderm he wahi o tetahi rauropi multicellular kararehe. Anake i etahi tonu tenei hanganga te i roto i anake whanaketanga embryonic, i ētahi atu - no te te ora. He aha te mea ectoderm?

Ngā momo o paparanga iroriki

I roto i E wehewehe ana ontogeny o te hua manu nga wairakau toutou, ki te hanga i te maha ngā paparanga o ngā pūtau mo te wā. I roto i to ratou pārōnaki ko te hanganga o te maha ngā paparanga o te tinana, e muri e hanga i te kopa, whēkau me ngā pūnaha. Ectoderm - he wahi o te Germinal waho. I roto i te whanaketanga o te whakatō kākano kua hanga e te reira o te tuatahi kahu waho o ngā pūtau. Ko te rau i roto o te kukune i huaina te kiriroto. I muri whakawhanakehia reira i te pūnaha romahā me te kūnatu. Mai i te apa iroriki waenganui - kiriwai - i hanga tinana e kiia ana ki te herea huihui te tinana katoa. Ko te reira i te uaua, me tuhonohono e, kōhiwi ā, whakaputa uri, circulatory me te pūnaha puha.

pärönaki o te ectoderm

Ectoderm - he apa nucleation, i hanga o ngā pūtau e hipokina me whēkau o te pūnaha io. puta tōna hanganga i te wā gastrula. Ko te pūnaha io o vertebrates āhuatanga e te taumata tiketike o te whanaketanga. Kei a ia ko te roro, me te ua, me te te muka takitahi e whakawhānui i ratou ki hanganga katoa o te tinana. Kei te ahu ano okana Sense me ngā pūnaha pūoko i te ectoderm. Ka rite ki te kukune whanake i te wahi o te kahu waho o ngā pūtau, hanga reira he arai. Tuatahi, me te tuatahi ko te kiko epithelial o te kiri, me te pūnaha kūnatu.

ectoderm o hydra

I roto i te coelenterates kararehe ectoderm - he apa tinana e tonu puta noa te ora. A feruri i te hi'oraa o te hanganga o tona hydra wai māori. Tenei kararehe e rua-apa nei te tinana i hanga e ecto- me te kiriroto. I waenganui ia ratou ko te taonga intercellular paraharaha mātotoru. E rerekē ngā pūtau ectoderm i te hanganga, me ngā mahi. Hoki te wā tuatahi i roto i te kukuwhatanga o taua hanganga motuhake puta noa i te māngai o coelenterates.

Kei te hanganga o ngā pūtau kiri-uaua ectodermal, e e taea ki te kirimana. Ngā mihi ki a ratou, Kei te neke te hydra rite te Acrobat, tahuri ki nga kapu i runga i nga kāwai. A, no te kitea ki ngā pūtau io, e kua whakaritea ano i roto i te kahu o waho o te tinana, kōpeke te kararehe te. Ko te faaiteraa o te mahi pūpū tenei. Kei te tikanga takawaenga hoki te paparanga waho nga pūtau e taea kia puta ki tetahi atu momo. tautuhi te reira i te taumata tiketike o te ora o te wai māori hydra. Ka taea e tino whakahoki te reira i to koutou tinana, ara i te āhua mushy.

He aha te mea te pūtau stinging

Ectoderm - Ko te paparanga waho e te kaimahi rite te tikanga pono o te tiaki me te hopu. whakamana ana tēnei mahi te pūtau stinging. ngā ratou o te capsule ki te miro roto miro. A, no te haere atu i te patunga, tae mai ia ki te makawe tairongo. Ka rite ki te hua, he mīsini miro stinging, me te kaha ngau ki tona tinana. Fakataha ki reira e whakaurua matū paitini. pārurenga pararutiki te whakamahi i kawekawe kei roto i te lumen intestinal, kei hea he reira nakunaku. He maha ngā momo o te kakaru e kino ki te tangata. Whakahaere o ratou pūtau stinging ai weranga nui, tauwhatinga o te ngakau, me te pūnaha romahā, a ētahi wā noa pito me mate.

Na, ko te ectoderm ko te paparanga iroriki waho, i nei te tukanga mira i roto i vertebrates āhua rakau tinana me whēkau o te pūnaha io. I roto i te coelenterates hanga ectoderm he maha o ngā pūtau motuhake: kiri, uaua, takawaenga, karere, me te stinging.