Ukukhulelwa kuyinkimbinkimbi enhle yokusebenza komzimba eyenzeka emzimbeni wesifazane.
Ubude bale nqubo bukala ngezindlela ezahlukene. Ezingeni lekhaya liyamukelwa ukulinganisa ezinyangeni. Ukukhulelwa kuthatha izinyanga ezingu-9 zekhalenda. Ezokwelapha, uhlelo lokulinganisa olunembile lwakwamukelwa. Isikhathi sonke sokuthuthukiswa kwe-intrauterine ye-fetus sihlukaniswe ngezigaba (izigaba) ngamasonto. Uhlelo lwesilinganiso samasonto onke luvumela ukuzimisela okunembile kwezikhathi ezibalulekile zokuthuthukiswa komntwana.
Ukukhulelwa ngokwemvelo kuqhubeka amasonto angu-40 ± 2.
Ngokusho ikhalenda yokuthuthukiswa kwe-intrauterine ye-fetus, ungakwazi ukuqapha inqubo ku-dynamics. Kubonisa ngesimo setafula inqubo yentuthuko yezitho zengane yamaviki futhi ibukeka ngale ndlela ngendlela elandelayo.
Ake sibheke ngokuningiliziwe ngemigomo yokuthuthukiswa kokukhulelwa kwamasonto.
Ishadi lokuthuthukiswa kwe-Fetal ngesonto
- 1-4 amasonto. Emasontweni okuqala ekuthuthukiseni i-fetus ibizwa ngokuthi i-embryo. Iqanda elikhuliswe ngokushesha lihlukanisa futhi lifinyelele esibelethweni ngosuku lwesithathu. Khona-ke umbungu uhambela ezindongeni zawo zesisu futhi uqhubeka ukhona njengembungu. Ukuthuthukiswa kwe-fetus (okwamanje i-embryo) emasontweni okuqala okukhulelwa kuqala ngokubunjwa kwe-tube ye-neural, okungeyona into engaphezu komgogodla wendlala yomgogodla kanye nobuchopho. Isonto lesithathu ukubeka ukuphefumula, ukugaya ukudla, ukujikeleza kanye nezinye izinhlelo zomzimba. Amathumbu, amaphaphu nesibindi ahlelwe ngesonto lesine. Umgogodla wakhiwa.
- 5 ngesonto . Ukuthuthukiswa kwesistimu ye-fetal nezitho ziyaqhubeka. Isibindi siqala ukusebenza.
- Isonto eli-6. Iqala ukuguqulwa kwamehlo, ama-rudiments ebonakalayo wezindlebe ne-spout. Izimbambo ziqala ukuhlukaniswa zibe izigqoko, izibani, amahlombe, izintambo, izintende, izinyawo. Ubuchopho buqala ukulawula umsebenzi wemisipha nenhliziyo.
- Iviki eli-7. Isistimu yethambo ithuthuka. Imihlathi iyichazwa. Amehlo avikelwe amakhulu eminyaka.
- Iviki eli-8. Iminyango yobuchopho isakhiwe. I-fetus ingakwazi kakade isabele kwezinye iziphazamiso ngokunciphisa noma ukuchofoza. Ebusweni baqala ukuphuma izici zokuqala, emilenzeni nasezimpini zivele iminwe.
- Isonto eli-9. Zonke izingxenye zenhliziyo sezivele zakhiwe. Isithelo singadlulisa izingalo nemilenze, vula umlomo bese ujikeleza ikhanda.
- Isonto eli-10. Ukwakhiwa kwezitho zokubeletha ze-fetus kuyaqhubeka. Amehlo athuthukile ngokugcwele.
- Isonto eli-11. Ngenxa yentuthuko ye-receptors, ukuzwela kwesikhumba kwanda.
- Isonto eli-12. I-fetus ingakwazi kakade yenza ukunyakaza okuhlukahlukene: ukuguqa ikhanda lakho, iminwe eminyene nezinzwane, vula futhi uvale umlomo wakho, ususe umunwe wakho.
- Isonto eli-13. I-trimeter yokuqala yokukhulelwa yaphela. Zonke izitho ezisemqoka zibekiwe. Zonke izingxenye zesistimu yokugaya ziqala ukusebenza.
- Amaviki angu-14-15. Uhlelo lwe-excretory luqala ukusebenza. Ukuguqulwa okusebenzayo kobuchopho kwenzeka.
- Isonto eli-16. Umomotheka ubonakala ebusweni bomntwana. Izinwele zokuqala, eyelashes, amashiya akhula.
- 17-18 amasonto. I-pituitary, i-pancreatic ne-gland ye-gland iyaqala ukusebenza. Kuthuthukisa ukuhlanganiswa kokuhamba kwengane.
- Iviki eli-19. I-apparatus ye-vestibular isakhiwe. Kukhona inkulumo ebusweni.
- Amaviki angu-20-21. Ama-wrinkle ebusweni ahlanjululwa. Ukuqedela ukwakheka kwamapulangwe e-nails kanye nama-auricles.
- Isonto eli-22. Amapulangwe akhiwa futhi agcwele uketshezi olukhethekile.
- Isonto eli-23. Uhlelo lwezinzwa lwenza imisebenzi yalo: ingane ingasabela ekuthintweni kwangaphandle.
- Amaviki angu-24-25. Ukuthuthukiswa kwesibindi, amathumbu nesisu sekuphelile.
- Isonto eli-26. I-fetus iyakwazi ukuveza ukunambitheka kwayo kanye nezintandokazi ezicacile.
- Amaviki angu-27-28 . Izitho zomntwana zizungezile. Ingane ingasebenzisa ukuthinta, ukuzwa, iphunga.
- Amaviki angu-29-30. Amasosha omzimba aqala umsebenzi wawo.
- Isonto eli-31. Ingane ithatha indawo ye "embryo": izimbambo eziboshwe kanye nemilenze yangaphambili.
- Iviki elingama-32. Kukhona ukuphenduka kwengane endaweni ekhanda eliphansi.
- Amaviki angu-33-34. Ingane ifunda umzimba wayo kanye nezwe elikuzungezile ezingeni lezinzwa zokuzwa. Ukuvuthwa kwamapayipi kufike ekupheleni.
- Amaviki angu 35-36. Isibindi sigcina izinqolobane zensimbi emsebenzini omningi. Isikhumba sishaywa.
- Amaviki angu 37-38. Ubuchopho nekhanda ziyaqhubeka nokukhula. Iqoqa amafutha asundu, okuzovikela ingane ezinyangeni zokuqala zokuphila kusuka ku-hypothermia.
- Amaviki angu-39-40. Ukuhamba komntwana kunciphisa. Ulungiselela ukuzalwa.
- Amaviki angu-41-42. Labo abangakazalwa ngaphambi kwalesi sikhathi, baqhubeke besisindo futhi balindele ukuzalwa.
