Nyob rau theem blastocyst cov hlwb raug txiav txim siab?

Cov txheej txheem:

Nyob rau theem blastocyst cov hlwb raug txiav txim siab?
Nyob rau theem blastocyst cov hlwb raug txiav txim siab?
Anonim

Qee lub hlwb los ntawm cov placenta tsim mus rau hauv ib txheej txheej ntawm daim nyias nyias (chorion) nyob ib ncig ntawm lub blastocyst. Lwm cov hlwb tsim mus rau hauv ib txheej txheej ntawm daim nyias nyias (amnion), uas tsim lub hnab amniotic. Thaum lub hnab tsim (txog hnub 10 txog 12), lub blastocyst raug txiav txim siab an embryo.

Cov hlwb hauv blastocyst hu ua dab tsi?

Theem blastocyst kuj yog qhov chaw nyob rau hauv qhov no yog thawj zaug uas muaj ob yam ntaub so ntswg. Lub blastocyst yog tsim los ntawm ib tug hollow sphere ntawm trophoblast hlwb, nyob rau hauv uas yog ib tug me me pawg ntawm hlwb hu ua lub puab cell loj.

Lub cell theem twg yog blastocyst?

Nyob rau hauv tib neeg, blastocyst tsim pib li 5 hnub tom qab fertilization thaum cov kua dej puv kab noj hniav qhib rau hauv lub morula, lub pib embryonic theem ntawm ib pob ntawm 16 hlwb. Lub blastocyst muaj ib txoj kab uas hla ntawm 0.1-0.2 hli thiab muaj 200-300 hlwb tom qab cleavage sai (cell division).

Puas yog blastocyst yog pob khoom ntawm cov hlwb?

Raws li tib neeg lub qe sib faib, nws thawj zaug dhau los ua lub pob ntawm cov hlwb, morula. Tom qab ntawd, txog tsib hnub tom qab fertilization, nws dhau los ua ib lub pob hollow, blastocyst. … Nyob rau hauv lub pob yog ib pawg me me ntawm cov hlwb, lub puab cell loj, uas yuav tsim tag nrho cov ntaub so ntswg nyob rau hauv lub cev.

blastocyst tsim dab tsi?

YBlastocyst, ib theem tshwj xeeb ntawm tus tsiaj embryo. Nws yog

ib daim ntawv ntawmblastula uas tsim los ntawm ib pawg berry zoo li cov hlwb, morula. Ib kab noj hniav tshwm nyob rau hauv lub morula nruab nrab ntawm lub hlwb ntawm lub puab cell loj thiab lub enveloping txheej. Qhov kab noj hniav no puv nrog kua.

Pom zoo:

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