Amaviki ambalwa okuqala wokukhulelwa kubaluleke kakhulu, ngoba phakathi nalesi sikhathi ingane ikhula futhi ishintshe ngokukhuphuka nemingcele. Ngalesi sikhathi ukuthi zonke izitho eziyisisekelo nezinhlelo zibekwe futhi ziqale ukwakha.
Khumbula ukuthi isikhathi sokubeletha kanye "nobudala" bomntwana abuhambisani nalokhu: owokuqala uhlala njalo ngaphezu kokugcina kwamasonto amabili, kusukela ekuqaleni kokukhulelwa kwezidakamizwa zokukhulelwa kuthatha usuku lokuqala lokuya esikhathini. Kulesi sihloko, sizohlola ukuthi yiziphi "impumelelo" umbungu oye wawuthola emavikini ayisishiyagalolunye.
Izithelo emavikini angu-8 - ubukhulu
I-fetus (noma kunalokho, i-embryo, isikhathi esibukeka ngayo) ibukeka kanjani emavikini ayisishiyagalolunye? Ngokuphindaphindiwe kufana nomuntu, nakuba izitho zingakakhiwa ngokugcwele, futhi emuva kancane kuphenduka umsila. Ubude bomntwana kusuka ku-coccyx kuya phezulu (okuthiwa usayizi we-coccyx-parietal, noma i-KTP) yi-1.5-2 cm. Lokhu akukona okwedlula izithelo zokusajingijolo. Yebo, kanti ubukhulu bungaba ngu-3 g. Ubukhulu be-biparietal yekhanda le-embryo ngu-6 mm, kanti ububanzi be-yolk bag ngu-4.5 mm.
Ngezinye izikhathi ucwaningo lwe-ultrasound lwembula ukuthi ubukhulu be-fetus emavikini angu-8 wokubeletha abuhambisani nokujwayelekile. Lesi akusona isizathu sokwesaba. Iqiniso liwukuthi ngezinye izikhathi ukuthuthukiswa nokukhula kombungu womuntu kwenzeka ngokuphambene. Esinye isizathu singenzeka: ukukhulelwa sekufikile ekupheleni komjikelezo wokuya esikhathini. Futhi kulokho, futhi kwesinye isikhathi ingane izobambelela futhi, mhlawumbe, izothola "imininingwane".
Ukuthuthukiswa kwe-Fetal amasonto angu-8-9
Emasontweni angu-7-8 umntwana akabukeka sengathi ufana nomuntu: usalokhu ugobile, ikhanda lihanjiswe emgodini. Kodwa-ke, ngasekupheleni kweviki lesishiyagalombili lokukhulelwa futhi ekuqaleni kweyesishiyagalolunye, i-torso nentamo iqala ukuqondisa. Isisu namathumbu bathatha ifomu lokugcina bese behlala endaweni yabo yokuhlala unomphela, bakha i-loop oyinhloko yamathumbu. Ngenxa yentuthuko yesifuba, inhliziyo ihamba kancane kancane ngaphakathi kwe-thorax ezayo.
Ukuphatha nemilenze kuhluke kakhulu komunye nomunye. Esibambeni se-fetus ngeviki lesishiyagalombili lokukhulelwa, ungabona i-ulnar fossa nesihenqo, nasesandleni - iminwe yeminwe. Ngemva kwesikhashana, iminwe izokwakhiwa, futhi izinambuzane eziphakathi kwazo ziyophela. Imilenze ayishintshi okwamanje. Ukwakheka nokuthuthukiswa kwemisipha, amathambo kanye ne-cartilage kuqhuma ngokugcwele.
Inhloko yesisu somuntu emasontweni angu-8 cishe cishe isigamu sonke ubude bayo. Ukubunjwa kobuso kuqala. I-lens iso livaliwe iris elimnyama, i-retina iyakhiwa. I-arch yokuqala ye-branchial kancane kancane iguqulwa ibe yimigqa engaphezulu nangaphansi. Sekuvele kunokwenzeka ukuhlukanisa umjikelezo we-spout. Ama-rudiments ama-auricles aphansi kakhulu, kodwa maduzane azothatha indawo "evumelekile".
Intambo yomzimba kanye ne-placenta zikhula - ukuxhumana phakathi komama nengane. Emdongeni we-yolk sac, ama-primary cell cells avela. Kanye negazi badluliselwa emigqumeni yezinhlayiya zocansi. Ama-rollers womzimba owakhiwe, kodwa namanje akunakwenzeka ukucacisa ubulili bomntwana.
Uhlelo lwezinzwa luyaqhubeka lukhula, ikakhulukazi ubuchopho bukhula ngamandla. Kungakhathaliseki ukuthi kunzima kangakanani ukukholelwa lokho, abanye ososayensi bathi i-embryo ibilokhu iphupha amasonto angu-7-8. Ngaphezu kwalokho, ukuthuthukiswa
Isikhumba somntwana namanje sincane kakhulu, sibala. Ngayo imithwalo yegazi ebonakalayo, ubuchopho nezinye izitho ezithile.
I-Fetus ngesonto 8 lokukhulelwa - Ingozi
Kusukela ezinyangeni zokuqala zokukhulelwa, zonke izinhlelo ezibalulekile kanye nezitho zibekwe, noma yikuphi ukwehluleka kungaholela emiphumeleni edabukisayo - ukukhulelwa okuqhubekayo, ukukhulelwa kwesisu, ukuhlukunyezwa kokuthuthukiswa komntwana. Yingakho manje kuyadingeka ukuba uqaphele kakhulu: ungaphuzi utshwala (nganoma yisiphi isisindo), ungabhemi, ungathathi imithi uma kungenzeka.