Video: Cov txheej txheem ntawm Neurulation yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Neurulation hais txog qhov folding txheej txheem nyob rau hauv vertebrate embryos, uas suav nrog kev hloov pauv ntawm neural phaj mus rau hauv neural tube. Cov neural phaj quav rau ntawm nws tus kheej los tsim cov hlab neural, uas yuav tom qab sib txawv rau hauv tus txha caj qaum thiab lub hlwb, thaum kawg tsim lub hauv paus paj hlwb.
Ntxiv mus, Neurulation tshwm sim li cas?
Neurulation . Neurulation yog txheej txheem uas cov phaj neural khoov thiab tom qab fuses los tsim lub raj hollow uas thaum kawg sib txawv hauv lub hlwb thiab tus txha caj qaum ntawm lub hauv paus paj hlwb.
Ib sab saum toj no, dab tsi yog theem sib txawv ntawm Neurulation hauv tus menyuam qaib embryo? Ntawm cov ntaub so ntswg, neurulation tshwm sim hauv plaub theem (Daim duab 4-2): (i) kev hloov pauv ntawm lub hauv paus ntawm lub cev xeeb tub ectoderm rau hauv cov phaj tuab tuab (ii) shaping thiab elongation ntawm cov phaj neural, (iii) khoov ntawm cov phaj neural nyob ib ncig ntawm ib qho zawj nruab nrab tom qab los ntawm kev nce ntawm cov folds sab nraud (iv)
Hauv qhov no, txheej txheej kab mob twg koom nrog hauv cov txheej txheem ntawm Neurulation?
Nws thiaj li, lub clump ntawm cov hlwb mus dhau ib theem hu ua gastrulation, thaum lub sij hawm lub embryo reorganizes nws tus kheej rau hauv peb txheej txheej: endoderm , ectoderm , thiab mesoderm . Tom qab gastrulation, lub cev xeeb tub dhau los ntawm cov txheej txheem hu ua neurulation, uas pib txhim kho lub paj hlwb.
Neurulation yog dab tsi thiab txheej txheem txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej twg?
Neurulation . Tom qab gastrulation, lub txheej txheem neurulation txhim kho cov hlab neural hauv ectoderm, saum toj no notochord ntawm mesoderm.
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