Extraembryonic mesoderm tuaj qhov twg?

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Extraembryonic mesoderm tuaj qhov twg?
Extraembryonic mesoderm tuaj qhov twg?
Anonim

Lub extraembryonic mesoderm nyob rau hauv tib neeg embryos ntseeg tau tsim los ntawm the hypoblast hypoblast Endoderm progenitor cells ua rau lub plab hnyuv thiab mus rau tag nrho cov ntaub so ntswg endoderm. Hauv kev txhim kho nas, cov hlwb no tshwm sim nyob rau hauv anterior primitive streak (nruab nrab mus rau lig streak) thiab posterior epiblast (pre thiab ntxov streak). https://discovery.lifemapsc.com › endoderm-progenitor-cells

Endoderm Progenitor Cells (APS) - LifeMap Discovery

(txawm tias qhov kev txhawb nqa trophoblast kuj yog plausible), thaum nyob rau hauv nas, nws tshwm sim los ntawm caudal kawg ntawm lub primitive streak primitive streak Lub primitive streak yog tus qauv uas tsim nyob rau hauv lub blastula thaum lub sij hawm thaum ntxov.ntawm avian, tsiaj reptilian thiab mammalian embryonic kev loj hlob. Nws ua rau ntawm lub dorsal (rov qab) lub ntsej muag ntawm lub embryo tsim, mus rau lub caudal los yog posterior kawg. https://en.wikipedia.org › wiki › Primitive_streak

Primitive streak - Wikipedia

Daim ntawv Extraembryonic mesoderm nyob qhov twg?

Lub extraembryonic mesoderm ntawm chorion, chorionic villi, thiab lub cev stalk originates nyob rau hauv lub caudal margin ntawm lub primitive streakuas tsim nyob rau hauv 12- mus rau 14-hnub tib neeg thiab macaque embryos. Tsim nyob rau hnub 8 hauv tib neeg. Hnub 12 ntawm tib neeg txoj kev loj hlob, lub extraembryonic mesoderm splits los ua chorionic kab noj hniav.

Extraembryonic daim nyias nyias tsim li cas?

Lwm yamextraembryonic daim nyias nyias tsim los ntawm lub puab cell loj, lub amnion, ces loj hlob tshaj lub tsim embryo (Daim duab 10.4). Lub amniotic kab noj hniav yuav puv nrog amniotic kua. Lub amnion yog ib qho tseem ceeb extraembryonic membrane thoob plaws hauv kev loj hlob.

Extraembryonic ectoderm tuaj qhov twg?

Cov ntaub so ntswg xim ntsuab (cov extraembryonic ectoderm thiab ectoplacental cone (ec)) yog muab los ntawm the trophectoderm. Cov ntaub so ntswg daj yog muab los ntawm cov txheej txheem endoderm thiab epiblast hlwb uas dhau los ntawm cov kab mob, tsim kom muaj qhov tseeb endoderm.

Epiblast ua dab tsi?

Lub epiblast yog muab los ntawm lub cell loj thiab nyob saum lub hypoblast. Cov kab mob epiblast ua rau peb cov kab mob tseem ceeb (ectoderm, qhov tseeb endoderm, thiab mesoderm) thiab mus rau cov extraembryonic mesoderm ntawm lub visceral yolk sac, allantois, thiab amnion.

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