Video: Trilaminar disc yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Anatomical terminology. A trilaminar embryo (lossis trilaminary blastoderm, lossis trilaminar noob daim disk ) yog theem pib ntawm kev tsim cov kab mob triploblastic, uas suav nrog tib neeg thiab ntau lwm yam tsiaj. Nws yog lub embryo uas tshwm sim raws li peb txheej txheej sib txawv - ectoderm, mesoderm thiab endoderm.
Ua qhov no hauv kev txiav txim siab, ua li cas rau Trilaminar disk?
Cov bilaminar cov noob daim disk sib txawv nws tus kheej ntxiv rau hauv a trilaminar embryo, nyob rau hauv uas cov cell ntws hla cov txheej txheej txheej thaum ub ntawm ob txheej txheej kab mob uas twb muaj lawm thiab yog li tsim cov txheej txheej txheej thib peb embryonic (mesoblast/derm). Hauv lub sijhawm no lub embryo ntsib kev hloov pauv ntau.
Ntxiv mus, dab tsi yog cov kab mob kis? Hauv pem teb ntawm amniotic kab noj hniav yog tsim los ntawm lub embryonic disc (los yog embryonic daim disk ) tsim los ntawm txheej txheej ntawm cov hlwb prismatic, the cev xeeb tub ectoderm, muab los ntawm sab hauv cell-pawg thiab dag hauv apposition nrog endoderm.
Cov lus nug tseem yog, yuav ua li cas Trilaminar disc tsim?
Gastrulation yog tsim ntawm trilaminar cev xeeb tub daim disk los yog gastrula los ntawm kev tsiv ntawm epiblast cells. Cov kab mob Epiblast tsiv mus los los ntawm cov txheej thaum ub ntawm epiblast thiab hypoblast txheej thiab daim ntawv txheej txheej nruab nrab ntawm cov cell hu ua intraembryonic mesoderm.
Nyob rau theem twg ntawm embryogenesis ua peb txheej txheej kab mob?
Thaum lub sij hawm gastrulation, cov cev xeeb tub txhim kho peb txheej kab mob ( endoderm , mesoderm , thiab ectoderm) uas sib txawv hauv cov ntaub so ntswg sib txawv.
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