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2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
A. Lub blastocyst (Daim duab 14-1, hnub 5 ) muaj ib txheej ntawm trophoblastic hlwb, uas yuav loj hlob mus rau hauv lub fetus feem ntawm lub placenta, ib tug puab cell loj nyob rau hauv lub cell loj nyob rau hauv lub cell. Qhov loj ntawm lub blastocyst yog tsim los ntawm ob hom hlwb: cov uas yuav dhau los ua cov kab mob loj hlob (tus epiblast), thiab cov uas yuav loj hlob mus rau hauv cov placenta, chorion, thiab amniotic daim nyias nyias.. Cov hlwb uas yuav loj hlob mus rau hauv lub embryo tiav yog hu ua embryonic stem cells (ESCs). https://www.sciencedirect.com › topics › inner-cell-mass
Inner Cell Mass - tus txheej txheem cej luam | ScienceDirect Topics
uas yuav loj hlob mus rau hauv lub embryo, thiab ib kab noj hniav, lub blastocoel, uas yuav dhau los ua lub hnab yolk.
blastocoel theem yog dab tsi?
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 uas ua rau hauv Lub blastula (blastocyst) ntawm amphibian thaum ntxov thiab echinoderm embryos, los yog nruab nrab ntawm epiblast thiab hypoblast ntawm avian, tsiaj reptilian, thiab …
blastocoel txhim kho li cas?
kaw lub kab noj hniav uas muaj kua, lub blastocoel. Tom qab lub blastula tsim, nws hloov mus rau lub gastrula (q.v.), txheej txheem hu ua gastrulation. Nyob rau hauv cov kab mob xws li tsiaj txhu, morula ua ntej (q.v.), ib pawg berry zoo li cov hlwb, tsim.rau hauv ib qho txawv me ntsis ntawm blastula, lub blastocyst (q.v.).
Yuav ua li cas thaum Blastulation?
Blastula, hollow sphere ntawm cov hlwb, lossis blastomeres, tsim thaum lub sij hawm kev loj hlob ntawm embryo los ntawm rov cleavage ntawm lub qe fertilized. Cov hlwb ntawm blastula tsim ib txheej txheej epithelial, hu ua blastoderm, kaw cov kab noj kua dej, lub blastocoel.
Thaum blastocoel tsim nyob rau hauv lub embryo hu ua?
Teb: Ib qho amphibian embryo nyob rau hauv 128- cell theem yog suav tias yogblastulavim tias blastocoel hauv lub embryo yuav tshwm sim thaum lub sijhawm no. Cov kua dej uas muaj kab noj hauv cov tsiaj hemisphere ntawm tus qav.
Pom zoo:
Puas yog lub hnab zoo lossis lub hnab zoo?
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Yog tias koj tso siab rau ib qho piv txwv me me ntawm googlable American ntawv xov xwm, hais txog lub hnab thawj zaug tshwm sim nyob ib ncig ntawm 1900. … Nws zoo nkaus li tias "bag zoo" thiab "goodie bag" yog siv. interchangeably rau ob tog menyuam thiab preemptive airline thov txim.
Tau dhau los lossis dhau lawm?
![Tau dhau los lossis dhau lawm? Tau dhau los lossis dhau lawm?](https://i.tvmoviesgames.com/preview/questions/17856767-has-been-passed-or-has-passed-j.webp)
Koj tsis tuaj yeem hais tias "tau dhau mus lawm" vim tias qhov ntawd yog kev tsim kho tsis raug thiab "dhau mus" yog qhov tsis hloov. Txoj kev uas yuav hais tau yog "nws tau tas sim neej". VS tau dhau lawm?
Yuav ua li cas kom dhau qhov kev ntseeg siab los ntawm kev sib raug zoo yav dhau los?
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Kev txhim kho kev ntseeg siab thaum koj tau ua phem rau ib tug neeg Xav seb vim li cas koj thiaj ua li ntawd. Ua ntej koj pib ua tus txheej txheem ntawm kev txhim kho kev ntseeg siab, koj yuav tsum xub xyuas nrog koj tus kheej kom nkag siab tias vim li cas koj thiaj li ua.
Puas dhau los dhau lawm?
![Puas dhau los dhau lawm? Puas dhau los dhau lawm?](https://i.tvmoviesgames.com/preview/questions/17891905-is-become-past-tense-j.webp)
Lo lus cov ntaub ntawv: ua, dhau los, ua lus ceeb toom: Daim ntawv dhau los yog siv tam sim no thiab yog yav dhau los koom nrog. Koj puas siv los ua? You'd use become, kab lus yog nyob rau tam sim no tense. Ua yog lub sijhawm dhau los.
Puas ya dhau los yog ya dhau lawm?
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The term flypast yog siv hauv tebchaws United Kingdom thiab Lub Tebchaws. Hauv Tebchaws Meskas, cov ntsiab lus flyover thiab flyby yog siv. Flypasts feem ntau khi nrog Royal lossis lub xeev cov xwm txheej, hnub ua koob tsheej, kev ua koob tsheej - thiab qee zaus kev lom zem lossis kev nco txog.