Qhov Tseem Ceeb Qhov txawv - Neurulation vs Gastrulation
Qhov sib txawv tseem ceeb ntawm Neurulation thiab Gastrulation yog raws li hom kev loj hlob uas tshwm sim thaum lub sij hawm embryogenesis. Neurulation ua rau txoj kev loj hlob ntawm lub paj hlwb whereas Gastrulation txiav txim siab tus txheej txheem ntawm kev tsim peb kab mob khaubncaws sab nraud povtseg.
Neurulation yog thawj kauj ruam ntawm txoj kev loj hlob ntawm lub paj hlwb, qhov uas nws ua rau cov neural phaj uas loj hlob mus rau hauv ib tug neural raj, thaum kawg ua rau tus txha caj qaum thiab lub hlwb. Gastrulation yog txheej txheem ntawm kev loj hlob ntawm peb txheej kab mob; ectoderm, endoderm, thiab mesoderm.
Neurulation yog dab tsi?
Neurulation yog ib theem ntawm embryogenesis, qhov twg lub vertebrate embryo folds thiab hloov nws cov neural phaj rau hauv neural raj. Neurulation tshwm sim nyob rau hauv lub endometrium ntawm 14th mus rau 17th hnub los ntawm fertilization. Cov txheej txheem no yog thawj kauj ruam rau kev tsim ntawm lub hauv paus paj hlwb uas suav nrog lub hlwb thiab tus txha caj qaum. Lub ectoderm ntawm lub embryo qhia qhov tsim ntawm neural raj. Raws li evolution, lub neural raj sib txawv rau hauv ntau mature qauv; paj hlwb thiab txha caj qaum.
Neurulation tuaj yeem categorized li thawj neurulation thiab theem nrab neurulation. Thaum lub sij hawm thawj neurulation, lub neural phaj tsim ib tug crease sab hauv kom txog rau thaum cov npoo nkag mus rau hauv kev sib cuag thiab fuse. Qhov no folding tsim neural grooves thiab neural folds. Txoj kev loj hlob ntawm lub notochord pab nyob rau hauv thawj txheej txheem neurulation. Thaum lub sij hawm theem nrab neurulation, qhov tsim ntawm lub raj yuav siv sij hawm qhov chaw los ntawm hollowing tawm nws tus kheej tawm ntawm ib tug khoom precursor.
Daim duab 01: Neurulation
Thaum ua tiav ntawm qhov thib ob neurulation, qhov anterior ntawm lub neural raj tau muab faib ua peb ntu hu ua forebrain, midbrain thiab lub hindbrain, ua kom tiav lub hlwb. Lub neural raj kuj ua rau tus txha caj qaum.
Gastrulation yog dab tsi?
Gastrulation yog txheej txheem uas peb txheej txheej kab mob sib txawv hauv lub embryo. Peb txheej kab mob yog ectoderm, endoderm, thiab mesoderm. Nyob rau hauv lub endometrium ntawm lub 7th mus rau 14th hnub los ntawm fertilization. Thaum lub sij hawm gastrulation, lub blastula yog tsim rau hauv ib tug multilayered qauv. Cov qauv no yog hu ua Gastrula. Thaum lub sij hawm gastrulation, cov kab mob ntawm tes sib txawv thiab cov axes ntawm lub cev yog tsim. Lub plab yav tom ntej yuav txhim kho tom qab gastrulation.
Daim duab 02: Gastrulation
Raws li cov qauv evolutionary, cov kab mob sib txawv qhia txog kev loj hlob ntawm cov txheej txheem ntawm tes. Yog tias cov kab mob yog triploblastic (cov tsiaj nyeg), lawv qhia tag nrho peb txheej hauv lawv txoj kev loj hlob. Yog hais tias cov kab mob yog diploblastic (cnidarians), lawv tsuas pom ob txheej cell; ectoderm thiab endoderm. Muaj qee cov yam ntxwv uas pom nyob rau hauv txoj kev loj hlob ntawm cov kab mob khaubncaws sab nraud povtseg. Lawv yog cov kev hloov pauv ntawm cov txheej txheem topological, sib txawv ntawm ectodermal, endodermal thiab mesodermal hlwb, tsim cov plab hnyuv thiab digestive muaj nuj nqi.
Dab tsi zoo sib xws ntawm Neurulation thiab Gastrulation?
- Ob leeg Neurulation thiab Gastrulation tshwm sim thaum lub sij hawm embryogenesis.
- Ob leeg coj qhov chaw hauv endometrium.
- ob leeg ua rau kev sib txawv ntawm lub embryo.
Qhov txawv ntawm Neurulation thiab Gastrulation yog dab tsi?
Neurulation vs Gastrulation |
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| Neurulation yog thawj kauj ruam ntawm txoj kev loj hlob ntawm lub paj hlwb, qhov uas nws ua rau cov neural phaj uas loj hlob mus rau hauv ib tug neural raj, thaum kawg ua rau tus txha caj qaum thiab lub hlwb. | Gastrulation yog txheej txheem ntawm kev loj hlob ntawm peb txheej kab mob xws li ectoderm, endoderm, thiab mesoderm. |
| Neurulation tshwm sim hauv 14th rau 17th hnub tom qab fertilization. | Gastrulation tshwm sim hauv 7th rau 14th hnub tom qab fertilization. |
| Gastrulation yog ua raws li neurulation. | Blastulation yog ua raws li gastrulation. |
| Tsim cov qauv lossis txheej txheej | |
| Neural tube, hlwb, thiab txha caj qaum yog tsim nyob rau hauv neurulation. | Cov kab mob txheej - ectoderm, endoderm, mesoderm yog tsim nyob rau hauv gastrulation. |
Summary – Neurulation vs Gastrulation
Neurulation thiab Gastrulation yog ob txheej txheem pom thaum lub sij hawm embryogenesis. Neurulation yog txheej txheem ntawm kev tsim cov hlab ntsha neural uas ua rau kev loj hlob ntawm lub hlwb thiab tus txha caj qaum. Gastrulation, piv txwv li, tshwm sim ua ntej cov txheej txheem Neurulation. Gastrulation yog txheej txheem ntawm kev tsim cov kab mob xws li ectoderm, endoderm, thiab mesoderm. Qhov no yog qhov txawv ntawm neurulation thiab gastrulation.
