Uphuhliso lombindi luyinkqubo ende, inzima kwaye inomdla. Emva kokuhlanganiswa kweqanda elincinane kunye nesidoda kwiinyanga ezili-9 nje umntu omtsha uza kuzalwa. Ekuphuhliseni kwayo, umntwana ozayo uya kuhamba ngamanqanaba ambalwa, kunye neziganeko ezibalulekileyo zokuphuhliswa kombungu, kwaye uya kuthiwa ngumbindi wesibindi okanye isisu, kwaye isiqhamo, kuze kube ngumzuzu wokuzalwa.
Amanyathelo okuphuhliswa kombungu
Uphuhliso lombungu womntu luqala ukususela kumzuzwana wokukhulelwa, ukuxuba kwe-spermatozoon kunye ne-ovum kunye nokubunjwa kwe-zygote, ehamba kwiintsuku ezimbalwa ziya kudlulela amanani amaninzi. Ngosuku lwesine luhlobo lwe-raspberry berry kwifom, kwaye liqukethe amaseli angama-58. Kule iiseli, kuya ku-5 kuya kufuneka ukuba kwenziwe i-placenta ezayo, i-chorion kunye nentambo ye-umbilical, i-53 eseleyo iya kunika uphuhliso olongezelelweyo lomntwana.
Kusukela ngomhla wesi-7 kuya kwe-14 ukusuka kwimeko yokukhulelwa, oomama baya kuzalumkela ngokukhawuleza - le yithuba lokuqala lokukhulelwa: umzuzu wokufakelwa kwembumbulu eludongeni lwesisu. I-embryo ayinakufakwa kwizizathu ezininzi, phakathi kwazo:
- ukuchithwa kwezinto ezinobuthi;
- umsebenzi owenzela umzimba;
- mpe mbelelo;
- ukuthunyelwa kweesistim;
- ukukhubazeka kwesakhiwo kunye neetoni zesisu.
Xa kwenzeka ukuphunyezwa ngokuphumelelayo, umbungu uphawula eludongeni lwe-uterine ecaleni kweenqanawa zomhlaba, eziza kunika ukutya kunye nokuphuhliswa.
Ukususela kwiintsuku ezingama-13 ukuya kwezi-18 umntwana odibeneyo ujikelezwe ngodonga olusenyongweni lwesibeleko, kwaye unxibelelana ngokusondeleyo ne-myometrium. Kule meko, imvulophu ye-embryo idala i-chorionic villi, eya kuba sisiseko seqanda le-fetal, i-chorion kunye nekamva elizayo. Kulo mzuzwana, ulwahlulo lweseli olusebenzayo luqala, ukwakheka kwenkqubo yokujikeleza yamandulo, i-amniotic fluid yenziwa.
Ukususela kwiintsuku ezingama-18-21, xa intliziyo yesibindi iqala ukubetha, misela ukufaneleka komntwana ozayo kwi-ultrasound. Oku kwenziwa ngenjongo yokufumanisa ukukhulelwa okukhukhulayo, ngezinye iinkalo kwenzeka kwiindawo zokuqala zokukhula kombindi kwaye kudibaniswa nokungabikho kwezinto eziphambili zomzimba.
Inyanga yokuqala yokukhulelwa iya kufika ekupheleni (inyanga kunye neveki kwizigulane zibalwa ukusuka kwimihla yokugqibela, kunye nemihla yokukhulelwa).
Uqala iiveki ezi-5-8, ngenyanga yesibini yokukhulelwa. Kwakhona kuqwalaselwa ngokubalulekileyo, njengoko zonke izitho kunye neenkqubo zibekwe. Kulo xesha lilinye linye lamalungu angundoqo asetyenzwayo - intambo yomzimba, equkethe i-plexus yeetribri kunye nemithanjeni, kwaye inikezela ukutya okunomsoco kunye neendlela zokuxilongwa kwe-embryo, ngelixa i- placenta ngexesha lokukhulelwa , elenza iiveki kamva, liphazamisa igazi lomama nomntwana, kunye nomsebenzi we-hematopoietic.
Ngomhla wama-20 ukuya kwe-22 ukusuka kwimeko yokukhulelwa, ukubunjwa kweengcambu zengqondo kunye nomgudu womgogodla, intlungu, emva koko iintsuku ezine kamva iingqungquthela zengqondo zenziwe-amehlo, indlebe, impumlo, umlomo, umsila ubonakala ngokucacileyo. Ukususela kwinyanga yesibini yentuthuko, imbungu isele ibizwa ngokuba ngumntwana. Ngeli xesha, i-CTE (ubukhulu beparietal size) yombungu ngu-5-8 mm. Intloko itholakala kwii-angles ezifanelekileyo kwi-trunk, izitho zenyuka, intliziyo iyakhiwa.
Ngeveki yesi-6, i-CTE yembryo iyanda ukuya kwi-15 mm, umsila ugoba kwi-trunk. Ukususela kwiiveki ezi-7-8 - amazinyo, isisombululo se-musculoskelet of the embryo senziwa. Iimpawu zamathambo zijikelezayo, zincinci,
Umbungu ufumana ubuso bomntu, umsila uyanyamalala, zenziwa izitho. Emva koko kulandela elinye ixesha elibalulekileyo, ekubeni zonke izitho ezisandul 'ukuza zihlala zisengozini kwizinto ezinobuthi. Kodwa umntwana engasayi kuthiwa yi-embryo. Ngoko, sachaza inkqubo yokuphuhliswa kwembungu epheleleyo.