Qhov sib txawv tseem ceeb ntawm thawj thiab theem nrab embryonic induction yog tias thawj embryonic induction yog cov ntaub so ntswg sib cuam tshuam nyob rau hauv thaum ntxov embryogenesis uas generates neural raj thaum theem nrab embryonic induction yog kev loj hlob ntawm ntau yam ntaub so ntswg thiab kabmob nyob rau hauv feem ntau tsiaj embryos.
Embryonic induction yog txheej txheem embryonic. Hauv cov txheej txheem no, ib pab pawg ntawm cov hlwb induces kev loj hlob ntawm lwm pab pawg ntawm cov hlwb. Ib yam li ntawd, sib txawv inducing cov ntaub so ntswg induce txoj kev loj hlob ntawm ntau yam ntaub so ntswg thiab kabmob thaum lub sij hawm lub embryonic kev loj hlob nyob rau hauv feem ntau tsiaj embryos. Nyob rau hauv luv luv, nyob rau hauv embryonic induction, lub xub ntiag ntawm ib cov ntaub so ntswg cuam tshuam txoj kev loj hlob ntawm lwm cov ntaub so ntswg nyob rau hauv lub embryo hluas heev. Yog li ntawd, qhov tsis muaj cov ntaub so ntswg inducing ua rau txoj kev loj hlob tsis zoo ntawm lwm cov ntaub so ntswg. Muaj ob hom embryonic induction ua thawj thiab theem nrab embryonic induction. Thawj embryonic induction yog hais txog cov xwm txheej tshwm sim thaum lub sij hawm ntxov embryogenesis. Secondary embryonic induction yog hais txog cov ntaub so ntswg cuam tshuam uas ua rau ntau hom cell.
Primary Embryonic Induction yog dab tsi?
Primary embryonic induction yog thawj qhov kev tshwm sim induction uas tshwm sim thaum ntxov embryogenesis. Ua ntej, cov ntaub so ntswg cuam tshuam los tsim cov hlab ntsha neural. Neural tube nws thiaj li tsim lub hauv nruab nrab paj hlwb. Cov hlwb ntawm neural crest induce lub nto ectoderm hlwb kom proliferate thiab invaginate los tsim lub neural raj.
Daim duab 01: Lub hauv paus embryonic Induction
Dab tsi yog Secondary Embryonic Induction?
Secondary embryonic induction yog kev loj hlob ntawm ntau yam ntaub so ntswg thiab kabmob hauv tsiaj embryos. Yog li ntawd, nyob rau hauv theem nrab induction, cov ntaub so ntswg cuam tshuam los tswj cov cell sib txawv thiab morphogenesis thaum lub sij hawm embryonic txoj kev loj hlob. Muaj ntau hom cell originate los ntawm qhov thib ob induction. Kev loj hlob ntawm lub qhov muag thiab pob ntseg yog ib qho piv txwv ntawm theem nrab embryonic induction. Ntxiv mus, raws li ib tug tshwm sim ntawm theem nrab embryonic induction, hniav, plaub hau, lens thiab ntau yam kabmob raug tsim. Secondary embryonic induction pib thaum lub hauv paus embryonic txoj kev npaj tau tsim. Ib txoj hlua ntawm cov txheej txheem induction theem ob yuav siv qhov sib txawv ntawm ntau hom xov tooj tshwj xeeb.
Dab tsi yog qhov zoo sib xws ntawm Lub Tsev Kawm Ntawv Qib Siab thiab theem nrab Embryonic Induction?
- Ob leeg, thawj thiab theem nrab embryonic induction ua lub luag haujlwm tseem ceeb hauv kev tsim cov ntaub so ntswg thiab cov kabmob hauv feem ntau cov tsiaj embryos.
- Qhov molecular xwm ntawm "primary" thiab "secondary" inductions zoo ib yam.
Dab tsi yog qhov txawv nruab nrab ntawm qhov pib thiab theem nrab embryonic induction?
Primary embryonic induction yog cov ntaub so ntswg sib cuam tshuam nyob rau hauv thaum ntxov embryogenesis uas tsim lub neural raj. Secondary embryonic induction yog lub embryonic induction uas coj txoj kev loj hlob ntawm ntau yam ntaub so ntswg thiab kabmob nyob rau hauv feem ntau tsiaj embryos. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm thawj thiab theem nrab embryonic induction.
Summary – Thawj vs Secondary Embryonic Induction
Thaum lub sijhawm embryogenesis, cov txheej txheem ntawm ib pab pawg ntawm cov hlwb cuam tshuam lossis ua rau kev coj ua ntawm kev sib txawv ntawm cov neeg nyob sib ze ntawm cov hlwb hu ua embryonic induction. Nws yog qhov tseem ceeb tshaj plaws hauv kev txhim kho vertebrate. Thaum chordamesoderm tiv tauj dorsal ectoderm, induction ntawm neural ectoderm tshwm sim. Nws yog lub npe hu ua thawj embryonic induction. Nyob rau hauv thawj embryonic induction, lub nto ectoderm hlwb loj hlob mus rau hauv lub neural raj. Neural tube nws thiaj li tsim lub hauv nruab nrab paj hlwb. Secondary embryonic induction yog kev loj hlob ntawm ntau cov ntaub so ntswg thiab kabmob vim yog embryonic induction. Yog li, qhov no qhia txog qhov sib txawv ntawm thawj thiab theem nrab embryonic induction.
