![Dab tsi ua rau lub plab? Dab tsi ua rau lub plab?](https://i.answers-medical.com/preview/medical-health/14187061-what-gives-rise-to-the-gut-j.webp)
Video: Dab tsi ua rau lub plab?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov kab mob plab zom mov (GI) cuam tshuam nrog peb txheej txheej txheej: mesoderm, endoderm, ectoderm. Mesoderm muab sawv mus rau cov ntaub so ntswg sib txuas, suav nrog phab ntsa ntawm plab lub cev thiab cov leeg nqaij. Endoderm yog lub hauv paus ntawm epithelial hauv ob sab phlu ntawm txoj hnyuv, daim siab, lub zais zis, txiav txiav.
Hauv qhov no, qhov endoderm ua rau dab tsi?
Endoderm hlwb muab nce mus Qee lub cev, ntawm lawv txoj hnyuv, lub plab, txoj hnyuv, lub ntsws, lub siab, thiab lub txiav. Lub ectoderm, ntawm qhov tod tes, nws thiaj li tsim tau qee qhov "sab nrauv" ntawm lub cev, suav nrog cov epidermis (sab nrauv txheej ntawm daim tawv nqaij) thiab plaub hau.
Ib qho ntxiv, 3 txheej txheej kab mob dab tsi ua rau nce? Tag nrho lwm cov tsiaj yog triploblastic, zoo li endoderm thiab ectoderm cuam tshuam los tsim a txheej txheej thib peb , npe mesoderm . Ua ke, cov peb txheej txheej kab mob yuav muab nce mus txhua lub cev hauv lub cev, los ntawm daim tawv nqaij thiab plaub hau mus rau lub plab zom mov.
Ib yam li ntawd, dab tsi ua rau lub plab primordial?
Keeb kwm plab raj tau muab los ntawm dorsal ib feem ntawm lub yolk sac, uas tau koom nrog rau hauv lub cev ntawm lub cev thaum lub sij hawm folding ntawm lub embryo thaum lub lim tiam thib plaub. Lub epithelium ntawm thiab parenchyma ntawm cov qog cuam tshuam nrog txoj hnyuv (piv txwv li, daim siab thiab txiav) tau muab los ntawm endoderm.
Dab tsi ua rau ectoderm mesoderm thiab endoderm ua rau nce?
Peb txheej txheej embryonic kab mob yog ectoderm , mesoderm, thiab endoderm . Cov mesoderm muab nce rau cov pob txha, cov leeg, cov zis, thiab lub raum. Cov endoderm txhim kho rau hauv cov kab mob hauv nruab nrog cev, xws li lub ntsws thiab lub plab zom mov.
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