Thaum lub cev kab noj hniav tsis yog kab los ntawm mesoderm, hloov mesoderm yog tam sim no raws li cov hnab ntim hauv nruab nrab ntawm ectoderm thiab endoderm. Xws li lub cev kab noj hniav hu ua pseudocoelom.
Nyob rau hauv pab pawg twg ntawm cov tsiaj lub cev kab noj hniav tsis lined los ntawm mesoderm es tsis txhob lub mesoderm yog tam sim no raws li nyob rau hauv lub pouches tawg nyob rau hauv nruab nrab ntawm lub ectoderm thiab endoderm?
Teb: (b) Thaum lub cev kab noj hniav tsis tiav los ntawm mesoderm es tsis txhob nws muaj nyob rau hauv daim ntawv ntawm cov hnab tawg, nyob nruab nrab ntawm ectoderm thiab endoderm, hom kab noj ntawm lub cev hu ua pseudocoelomate, Piv txwv li, roundworm.
Mesoderm li cas hauv nruab nrab embryonic cov ntaub so ntswg hauv Protostome?
Cov coelom ntawm feem ntau protostomes yog tsim los ntawm cov txheej txheem hu ua schizocoely. Lub mesoderm hauv cov kab mob no feem ntau yog khoom ntawm cov blastomeres tshwj xeeb, uas tsiv mus rau sab hauv ntawm lub embryo thiab tsim ob pawg ntawm cov ntaub so ntswg mesodermal.
Mesoderm Chav Kawm 11 yog dab tsi?
The mesoderm txheej lies nruab nrab ntawm endoderm thiab ectoderm. Cells muab tau los ntawm txheej no ua rau tag nrho lwm cov ntaub so ntswg ntawm lub cev, nrog rau cov dermis ntawm daim tawv nqaij, lub plawv, cov leeg nqaij, cov pob txha, thiab cov pob txha pob txha.
Mesoderm is present as scattered pouches in between the ectoderm and endoderm is
