Ectoderm - keia mawaho hua, ahu iho

Ke ectoderm ka hapa nui o kekahi holoholona, multicellular meaola. Wale kekahi i keia 'ole ua mālama' ia wale nō ka manawa embryonic? Acaeoey, oiai kekahi poe - no ka wā e ola ana. He aha ka ectoderm?

Ano o ka germ papa

Ma ontogeny o ka fertilized hua manu i hookaawale pinepine ae la oia, e lilo kekahi mau papa o aeee no manawa. Ma kā lākou differentiation o ke kahua o kekahi mau papa o ke kino, a ma hope e hana mai nā'aʻaʻa, nā loko, a nenoai. Ectoderm - he apana o ka mea owaho no germinal. Iloko o ka hooulu ana o ka zygote ka mea, ua hana o ka mua mawaho ahu iho la ka keena. Ka loko lau o ka embryo kapaia ka endoderm. Hope ia hoʻomohala mai ka ÷ naehana hanu a me ka digestive nenoai. Mai ka waena germ, ahu iho - mesoderm - hana kino e like me ka mea e hoopaa pu i ke kino holoʻokoʻa. He na nāʻiʻo a me ligaments, na iwi, reproductive, circulatory a me ka excretory nenoai.

nā mea loaʻa o ka ectoderm

Ectoderm - he nucleation, ahu iho, i hanaʻia o ka aeee i uhi a me nā loko o ka'emi ko kahua. Kona ho okumu ia lŘlŘ ma ka gastrula ke kahua. ʻO ko mākou hopohopo nenoaiu o vertebrates wehewehe aku ma ka pae kiʻekiʻe o? Acaeoey. Ua ninoieo o ka lolo a me ka spinal kaula, e like me na olona, kanaka e ana mai o ia mau mea a hiki i nā hale o ke kino. i hoohalike nā loko a me ka mīkiniʻimi nenoai i loko mai o ka ectoderm. E like me ka embryo e hoʻomōhala ai, mai ka apana o ka pā, ahu iho o aeee, ia 'ano apau loa o ka paku. First a poʻokela o ka epithelial'aʻaʻa o ka ili a me ka digestive kahua.

ectoderm o ka hooponopono pookela

Ma coelenterates holoholona ectoderm - he kino, ahu iho i pilikia ma ke ola. i ka hana o ka 'ole o kona freshwater hooponopono pookela noonoo. Kēia mau-, ahu iho holoholona kona kino ua hana ma ka ecto- a me ka endoderm. Ma waena o ia mea he anuanu anuanu intercellular waiwai. ectoderm aeee i e lauwili ma ka 'ole, a me ka hana. No ka mea manawa mua i loko o ka evolution o ia hana kūikawā kanu'ōiwi nā hōʻike pono i na elele o coelenterates.

Ke 'ole ninoieo o ectodermal ili-Muscle keena, a e hiki no i ka aelike. Mahalo iā ia, i ka hooponopono pookela ua neʻe me ka acrobat, haliu ae la ia i na kapuwaʻi ma luna o nā tentacles. I ka waiho kokoke ana i nā aʻalolo keena, i mea i ka hooponopono ia i loko o ka pā, ahu iho o ke kino, i ka holoholona ua'opihia. Kēia mea he kīnā o reflex haʻawina. Ka mea mawaho, ahu iho ua kekahi manaʻo waena na keena e hiki ke iho i loko o kekahi 'ē aʻe ano. Ua Ho'ākāka 'He kiʻekiʻe kiʻekiʻe o ka hou ana o ka freshwater hooponopono pookela. Ua hiki loa hoihoi kou kino, a hiki mai i ka mushy moku'āina.

He aha ka ka stinging keena

Ectoderm - mea he mawaho, ahu iho i lawelawe 'ana me ka ike loea kumu o ka hoomalu ana a me ka imi mea hihiu ana. He kuleana pili i ua hana stinging keena. Ka mea, komo no ka mea hōʻikeʻikeʻuʻuku me ke olonā i loko o ka pae. I ka wā o ka luahi hele ana,ʻo ia ke hele mai i ka ikepili koʻikoʻi lauoho. E like me ka hopena, stinging ka pae unwinds, aʻano ikaika nahu i loko o kona kino. Together me ka mea e hoʻolaunaʻawahia waiwai. Maʻi lōlō luahi hoʻohana feelers mea i loko o ka intestinal lumen, kahi ia o digestion. He nui laha 'o ka jellyfish e pilikia i kānaka. Hana i ko lakou stinging aeee ke kumu no ka wi'ā, hoʻohuikau o ka naau a me ka ÷ naehana hanu nenoaia, a me kekahi manawa, a hiki welau a me ka make.

No laila, i ka ectoderm o ka mawaho germ papa, mai a me ka mīkini wili pōhaku kaʻina hana i loko o vertebrates hoʻokino kino poi a me nā loko o ka'emi ko kahua. Ma coelenterates ectoderm ano he nui o ka hana kūikawā aeee:ʻili, Muscle, waena, nā aʻalolo a me stinging.