Dab tsi yog qhov tseem ceeb ntawm kev loj hlob ua ntej yug menyuam?
Dab tsi yog qhov tseem ceeb ntawm kev loj hlob ua ntej yug menyuam?

Video: Dab tsi yog qhov tseem ceeb ntawm kev loj hlob ua ntej yug menyuam?

Video: Dab tsi yog qhov tseem ceeb ntawm kev loj hlob ua ntej yug menyuam?
Video: SAIB HNUB NYUG ZOO THIAB TSIS ZOO LUB 12 HLIS 2021 | Hnub Nyug 2024, Kaum ib hlis
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Pre-Pregnancy thiab cev xeeb tub kev saib xyuas tuaj yeem pab tiv thaiv qhov teeb meem thiab qhia cov poj niam txog tseem ceeb cov kauj ruam lawv tuaj yeem ua los tiv thaiv lawv tus menyuam mos thiab ua kom lub cev xeeb tub zoo. Nrog tsis tu ncua cev xeeb tub Cov poj niam saib xyuas tuaj yeem: Txo qhov kev pheej hmoo ntawm kev xeeb tub.

Ua raws li qhov no hauv kev txiav txim siab, lub ntsiab lus ntawm kev xeeb tub yog dab tsi?

Kev loj hlob ntawm cev xeeb tub yog hais txog cov txheej txheem uas tus menyuam loj hlob los ntawm ib lub cell tom qab conception rau hauv ib qho embryo thiab tom qab a fetus.

Ib tug kuj yuav nug, puas yog kev saib xyuas ua ntej yug menyuam tiag tiag? Kev saib xyuas ua ntej yug menyuam tuaj yeem pab koj thiab koj tus menyuam noj qab nyob zoo. Cov me nyuam ntawm cov niam uas tsis tau txais kev saib xyuas ua ntej yug menyuam yog peb zaug ntau dua yuav muaj qhov hnyav thaum yug me nyuam thiab tsib zaug yuav tuag ntau dua li cov yug los ntawm cov niam uas tau txais saib xyuas.

Ib yam li ntawd, tej zaum koj yuav nug, dab tsi yog qhov tseem ceeb tshaj plaws ntawm kev loj hlob ntawm cev xeeb tub?

Lub sij hawm germinal pib nrog conception thiab xaus thaum lub blastocyst yog tag nrho implanted rau hauv cov ntaub so ntswg uterine. Tom ntej no, lub sij hawm embryonic kav los ntawm implantation mus txog 8 lub lis piam los ntawm lub sij hawm ntawm conception. Qhov no yog qhov feem ntau lub sij hawm tseem ceeb ntawm kev loj hlob ntawm cev xeeb tub.

Dab tsi yog cov yam ntxwv ntawm kev loj hlob ua ntej yug menyuam?

LUB STAGING NTAWM EMBRYONAL kev loj hlob

Anatomic hnub nyoog * (hnub) los ntawm conception Gestational age † (lub lis piam) ntawm gestation Cov yam ntxwv sab nrauv
5 Thaum ntxov somite theem (khau-sole-zoo li tus embryo)
20–21 Ua tiav qhib neural groove
21–26 6 Neural tube kaw, ob qhov kawg qhib
26–30 Ib los yog ob qho tib si neuropores kaw

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