Blastula thiab Gastrula yog dab tsi?
Blastula thiab Gastrula yog dab tsi?

Video: Blastula thiab Gastrula yog dab tsi?

Video: Blastula thiab Gastrula yog dab tsi?
Video: Embryo 2024, Tej zaum
Anonim

Cov Blastula yog ib tug kheej kheej, hollow, ib tug celled tuab qauv, pom nyob rau hauv thawj theem ntawm embryogenesis, thiab yog hu ua 'pre-embryo'. Cov gastrula yog tsim thaum lub sij hawm gastrulation theem ntawm embryogenesis, thiab muaj peb txheej kab mob, nrog cov qauv hu ua 'mature-embryo'.

Ua li no, qhov txawv ntawm Blastula thiab Gastrula yog dab tsi?

Lub ntsiab Qhov sib txawv ntawm blastula thiab gastrula yog hauv qauv thiab cov khoom ntawm txhua theem ntawm embryonic. Blastula tsim los ntawm morula hauv a txheej txheem hu ua blastulation. Gastrula tsim los ntawm blastula ib txheej txheem hu ua gastrulation.

Tsis tas li ntawd, Morula Blastula thiab Gastrula yog dab tsi? Lub zygote undergoes mitotic cleavage rau daim ntawv morula uas yog 16 celled theem hu ua morula uas ntxiv faib rau daim ntawv blastula uas yog 128 celled theem. Cov blastula differentiates rau hauv gastrula uas yog khob-zoo li tus thiab muaj peb kab mob txheej cell uas ntxiv tsim ib embryo thiab undergo organogenesis.

Ib yam li ib tug yuav nug, ua li cas Blastula ua Gastrula?

Cov gastrula tsim los ntawm cov hollow, ib txheej txheej ntawm cov hlwb hu ua a blastula uas nws tus kheej yog cov khoom ntawm rov faib cell, los yog cleavage, ntawm ib tug fertilized qe. Qhov no cleavage yog ua raws li lub sijhawm ntawm kev txhim kho nyob rau hauv uas cov xwm txheej tseem ceeb tshaj plaws yog txav ntawm cov cell txheeb ze rau ib leeg.

Dab tsi yog tib neeg Blastula?

Cov blastula (los ntawm Greek βλαστός (blastos), lub ntsiab lus "sprout") yog ib qho khoob ntawm cov hlwb, hu ua blastomeres, nyob ib puag ncig cov kua dej hauv cov kab noj hniav hu ua blastocoele tsim thaum lub sijhawm ntxov ntawm kev loj hlob ntawm embryonic hauv cov tsiaj.

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