Tus txheej txheem ntawm tus poj niam fertilization ua rau qhov pib ntawm cev xeeb tub - qhov no, tej zaum, txhua leej txhua tus paub hnub no. Thaum xub thawj koj, tej zaum, cov niam txiv tau sim piav qhia txog qhov no, tsis tas li, txhua yam kev dag hais thiab kev hais lus. Tom qab ntawd lawv tau qhia koj txog tus xib fwb, twb siv cov lus kho mob. Nyob rau hauv ob qho tib si, zaj dab neeg, raws li ib txoj cai, yog ib yam nkaus thiab veiled los yog pomzoo nrog cov lus tsis tseem ceeb thiab cov nqe lus.
Cov txheej txheem ntawm fertilization
Tom qab tshem tawm daim ntawv pov thawj los ntawm kev sib deev los yog ua haujlwm hauv tus kabmob ntawm tus poj niam muaj nyob rau nruab nrab ntawm 100 mus txog 300 plhom tus kab mob spermatozoons. Qhov feem ntau kom nquag plias thiab siv tau ntawm lawv twb tom qab ob peb feeb tau mus rau lub tsev menyuam, qhov twg hauv 2-3 teev nyob rau hauv lub kawg seem ntawm fallopian tubes ua ke nrog npaj txhij rau fertilization qe.
Fertilization ntawm ib lub qe yog ua tau, raws li ib txoj cai, nyob rau hauv ib lub sij hawm ntawm ib lub hlis - lub sij hawm thaum ovulation tshwm sim. Thaum lub sij hawm no, lub qe tawm ntawm lub zes qe menyuam thiab npaj mus ntsib nrog cov phev. Tus txheej txheem ntawm poj niam fertilization yog fusion ntawm ib phev nrog ib lub qe, raws li pom tias muaj ib qho embryo yog tsim. Ntawm chav kawm, thaum pib theem ntawm embryo yog ib qho zuaj zeej - lub zygote, uas ntev ntev yuav loj hlob thiab loj hlob.
Txawv tshwj xeeb tshaj tawm
Yog tias muaj ntau yam mob spermatozoa, ces muaj ntau yam cev xeeb tub. Tej zaum lub fertilization ntawm ob spermatozoa ntawm ib qe, ces lub teeb tshwm odnoyaytsovye twins, uas zoo sib xws li ob leeg li ob tee dej. Cov me nyuam yaus tseem muaj txhua yam hauv niam hauv plab: kev qaug, plhaub, plhaub plawv thiab txawm tias lub noob caj noob ces. Nws yog tsim nyog sau cia tias tus menyuam ntxaib nyob hauv txoj kev loj hlob muaj sib cuam tshuam rau ib leeg, yog li qhov kev tuag ntawm ib qho ua rau kev tuag zaum ob.
Yog hais tias ob tug spermatozoa fertilize txawv qe, ces cov me nyuam yog tau tsuas yog los ntawm cov neeg nyob ze. Cov me nyuam mos no muaj peev xwm sib txawv thiab sib txawv ntawm ib leeg, vim lawv tseem muaj chaw sib kis, ntshav khiav, daim nyias nyias thiab cov noob thaum hlob. Yog tias thaum cev xeeb tub ib tug fetus tuag, mus rau ob nws tsuas yog tswj lub hav zoov.
Ntau tus cev xeeb tub tau ntau lub txiaj ntsim ntawm qhov khoom neeg tsim tawm ntawm ib tug poj niam. Piv txwv li, thaum lub caij hnyuv tws kho, cov poj niam ntawm cov poj niam yog ua tiav, uas ua rau lub cev muaj ob los yog peb lub qe. ECO kuj txhais tau tias muab ob peb lub embryos hauv lub tsev menyuam, vim hais tias lub sij hawm uas tus me nyuam yuav siv sij hawm hauv paus yog heev me me. Tab sis muaj cov mob thaum tsis tsuas yog ib qho embryo yog siv tau - yog li ntawd muaj cov menyuam ntxaib thiab tsiaj txhu.
Tsis ntev los no, mob ntawm cov ntoo khaub lig-kev loj hlob nyob rau hauv cov poj niam, uas txog thaum nyuam qhuav los ua ib hom kev fairy taleas, kuj nce. Yuav kom fertilization mus rau qhov chaw thiab cev xeeb tub ua ntuj tsim, ib tug poj niam xav tau ib tug zes qe menyuam thiab lub raj plab raj. Tab sis feem ntau nws tshwm sim rau, vim muaj kev khiav hauj lwm los yog kev kis mob, tsuas yog ib qho kev ua zes qe menyuam, thiab ib lub raj ntim tau lub cev yog nyob sab nraud. Tab sis raws li kev xyaum qhia, ib tug poj niam fertilization tuaj yeem tshwm sim txawm tias nyob rau hauv cov ntaub ntawv no.
Ovum tom qab fertilization
Ntau npaum li cas koj yuav tsis sim pom cov cim qhia tias fertilization - qhov txheej txheem yuav siv sij hawm tsuas yog ob peb xuab moos tom qab xaus kev sib deev. Thiab lub cev nws tus kheej tuaj nyob rau hauv 6-7 hnub, thaum ib tug fertilized qe tau txais mus rau lub uterus. Yog li, cov tsos mob ntawm cev xeeb tub koj yuav pom tsis dhau ib lub lim tiam.
Cov kws kho mob ntawm cov tshuaj tsis pub xeeb rau cov khub niam txiv raws li lub sij hawm ntawm ovulation yuav tsum paub hais tias fertilization yuav tshwm sim thiab ntau tom qab. Cov ovum tom qab ovulation retains nws viability rau lwm 24 teev, thiab spermatozoa ua tau kom nquag plias li ob peb hnub.