![Lub cloacal membrane tsim li cas? Lub cloacal membrane tsim li cas?](https://i.answers-medical.com/preview/medical-health/13947250-what-does-the-cloacal-membrane-form-j.webp)
Video: Lub cloacal membrane tsim li cas?
![Video: Lub cloacal membrane tsim li cas? Video: Lub cloacal membrane tsim li cas?](https://i.ytimg.com/vi/gIVux6MLsNk/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov cloacal membrane yog cov daim nyias nyias uas npog lub embryonic cloaca thaum lub sij hawm kev loj hlob ntawm cov tso zis thiab nruab nrog cev. Nws yog tsim los ntawm ectoderm thiab endoderm los ua kev sib cuag. Tom qab ntawd, ectodermal plug, qhov quav daim nyias nyias , cov ntaub ntawv los tsim qhov qis thib peb ntawm qhov quav.
Tom qab ntawd, dab tsi ua cloaca?
cloaca - ( cloacal kab noj hniav) Lub sij hawm piav qhia txog kab noj hniav uas nyob rau hauv txoj hnyuv, qhov chaw mos, thiab cov zis qhib rau hauv vertebrates. Hauv ntau hom tsiaj no kab noj hniav tom qab tau muab faib ua thaj av hauv plab (urogenital sinus) thiab thaj tsam plab hauv plab (qhov quav).
Ib sab saum toj no, dab tsi yog lub oropharyngeal membrane? Lub cheeb tsam uas cov crescentic masses ntawm ectoderm thiab endoderm tuaj rau hauv kev sib cuag ncaj qha nrog ib leeg ua ib tug nyias. daim nyias nyias , lub buccopharyngeal daim nyias nyias (los yog oropharyngeal daim nyias nyias ), uas tsim lub septum ntawm lub qhov ncauj thaum ub thiab pharynx.
Ib yam li ntawd, nws yog nug, ua li cas yog lub notochord tsim?
Nyob rau hauv lub cranial ib feem, kev loj hlob notochord yog tsim ntawm mesenchymal hws sib sau prechordal phaj uas hloov pauv mus rau hauv notochordal phaj. Caudal rau lub phaj prechordal, lub tsim ntawm qhov tseeb notochord tshwm sim los ntawm tsim ntawm notochordal txheej txheem thiab kuj nyob rau hauv lub notochordal phaj.
Dab tsi yog txheej txheej txheej thaum ub?
Cov txheej thaum ub yog ib qho kev hloov pauv uas nws tsim, nyob rau hnub 15 ntawm tib neeg txoj kev loj hlob, cim qhov pib ntawm gastrulation, cov txheej txheem nyob rau hauv uas lub cell loj nyob rau hauv hloov mus rau hauv lub trilaminar embryonic disc, uas yog muaj peb kab mob txheej (ectoderm, mesoderm thiab endoderm.).
Pom zoo:
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Qhov muag. Cov ntaub so ntswg dawb nyob ib ncig ntawm lub qhov muag thiab ua lub hauv paus tseem ceeb ntawm lub ntiaj teb yog. iris, lub cev ciliary, choroid. Cov qauv ntawm cov kab mob uveal, lossis uvea, yog. dej lom zem
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