A blastocoel (/ˈblæstəˌsiːl/), kuj sau blastocoele thiab blastocele, thiab tseem hu ua blastocyst kab noj hniav (los yog cleavage lossis segmentation kab noj hniav) yog cov kua dej puv kab noj hniav uas cov ntaub ntawv hauv blastula (blastocyst) ntawm amphibian thaum ntxov thiab echinoderm embryos, los yog nruab nrab ntawm epiblast thiab hypoblast ntawm avian, tsiaj reptilian, thiab…
Blastocoel hauv tib neeg yog dab tsi?
Definition. npe. Cov kab mob ua ntej, cov kua dej puv hauv cov ntaub ntawv thaum ntxov ntawm embryo, piv txwv li. ntawm blastula.
Cov hlwb ua li cas rau blastocoel?
Lub blastocyst (Daim duab 14-1, hnub 5) muaj ib txheej ntawm trophoblastic cells, uas yuav loj hlob mus rau hauv fetal feem ntawm cov placenta, ib lub cell loj uas yuav loj hlob mus rau hauv lub embryo, thiab ib tug kab noj hniav, lub blastocoel, uas yuav ua tau lub yolk sac.
Blastocoel tsim li cas?
Blastocoel yog ib yam khoom ntawm embryogenesis uas yog tsim thaum lub embryo tau cog rau hauv tsev menyuam. Tom qab 30 feeb ntawm kev tsim ntawm zygote 1st cleavage tshwm sim (ntsug). Tom qab 30 feeb tom ntej. … Tom qab 72 teev ntawm kev tawg sai sai, 16 - celled theem hu ua Morulla (4th cleavage) raug tsim.
Nyob rau theem twg ntawm kev txhim kho lub blastocoel daim ntawv?
Lo lus ib feem coel (pronounced seel) los ntawm Greek, txhais tau tias kab noj hniav, los yog qhov tsua. Cov txheej txheem uas tsim cov blastocoel tseem hu ua cavitation: tsim lub qhov tsua. Qhov tshwj xeeb fuid puv qhov chaw pib tsim rautxog hnub tsib tom qab fertilization nyob rau hauv lub pob me me ntawm cov hlwb uas yuav dhau los ua ib tug tsiaj tshiab.
