Thaum lub cev kab noj hniav tsis yog kab los ntawm mesoderm, hloov mesoderm yog tam sim no li cov hnab tawg nyob nruab nrab ntawm ectoderm thiab endoderm. Xws li lub cev kab noj hniav hu ua pseudocoelom.
Thaum mesoderm nyob rau hauv cov hnab ntim hauv nruab nrab ntawm ectoderm thiab endoderm xws li lub cev kab noj hniav hu ua?
(vi) Hauv qee cov kab mob, lub cev kab noj hniav tsis yog kab los ntawm mesoderm, es tsis txhob mesoderm yog tam sim no nyob rau hauv daim ntawv ntawm cov hnab uas tawg nyob rau hauv nruab nrab ntawm ectoderm thiab endoderm, Lub cev kab noj hniav yog hu ua pseudocoelomthiab cov tsiaj uas muaj nyob rau ntawd yog hu ua pseudocoelomates e.g., Ascaris.
Nyob rau hauv cov tswv cuab mesoderm tshwm sim li cov hnab tawg?
Mesoderm tam sim no raws li cov hnab ntim ntawm cov ectoderm thiab endoderm hauv (1) Annelids (2) Echinoderms (3) Molluscs 4) Aschelminthes.
Mesoderm nyob qhov twg hauv lub cev?
Y Mesoderm muab nce rau
pob txha pob txha, cov leeg du, cov hlab ntsha, pob txha, pob txha mos, pob qij txha, cov ntaub so ntswg sib txuas, cov qog endocrine, raum cortex, cov leeg plawv, urogenital organ., uterus, fallopian tube, testicles thiab blood cells from the spinal cord and lymphatic tissue (saib daim duab 5.4).
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 mesodermal ntaub so ntswg.
