Ukuthuthukiswa kwe-fetus ngesikhathi sokukhulelwa

Bonke omama abazayo bafuna ukwazi ngenqubo yokukhulelwa nokuthi ingane ikhula kanjani esibelethweni. Yonke imininingwane mayelana nokuthi ingane isuka kanjani ku-tadpole iba yintsana enemilenze, izandla, ubuso akuyona into ethakazelisayo kuphela, kodwa futhi kubalulekile kumama ozayo. Ulwazi lokuthi ingane ikhulelwa kanjani ngesikhathi sokukhulelwa ngeviki kubalulekile ngoba konke ukuphuma kwemithwalo ephumayo kungathwala ulwazi mayelana nendlela le nqubo eyenzeka ngayo futhi ukuthi iphephile kanjani ingane ezayo.

Ukuzwa komama ozayo

Ubufakazi obuyinhloko bokukhulelwa yi-amenorrhea, ngamanye amazwi, ukungabi khona kokuya esikhathini nokunye okwenzeka ngokomzimba njengokwanda kwesisu, okuhlobene nokukhula kwesibeletho. Phakathi nokuthuthukiswa kwe-fetus nokukhulelwa, owesifazane, ngokwezibalo ezijwayelekile, uthola kusuka ku-11 kuya ku-13 kilogram. Zonke izimpawu eziyinhloko zokukhulelwa zihlobene ngokuqondile nezinga lezinguquko kuma-hormone egazini nasekucindezelweni, okuyinto phakathi nokukhula komntwana okubangelwa ezitho zangaphakathi zowesifazane okhulelwe. Izimpawu zokuqala ngesikhathi sokuthuthukiswa komntwana kuyisisindo esifana nalabo abathola owesifazane ngesikhathi sokuya esikhathini (ukucasuka okuqhubekayo nokungenangqondo, ukukhathala, isimo sengqondo esibi). Ukuhlelwa kabusha kwe-hormonal, isisindo esiyinkimbinkimbi, iphoqa umzimba ukuba wenze izinguquko ezihlukene futhi eziqondile ekudleni okuvamile. Kudingeka udle kancane, kepha njalo ngangokunokwenzeka, lokhu kuzokusiza ukuvimbela ukugcwala kwesisu ngaphezulu.

Izikhathi eziyinhloko zokukhulelwa

Ukuthuthukiswa okuvamile kwe-fetus kuhlukaniswe ngezigaba ezithile, ngasinye esinezici zayo.

Isigaba esisodwa sibizwa nge-blastogenesis. Lihlala izinsuku ezingu-15 kusukela ngesikhathi sokukhulelwa kwenzeka.

Isigaba esilandelayo, esibizwa ngokuthi i-embryogenesis, sihlala emavikini amathathu kuya kwangu-10. Ngesikhathi saleso sigaba, i-placenta iqala ngamandla, futhi izakhi zangaphakathi zakhiwa. Ekupheleni kwenyanga yesibili, i-embryo cishe isintu. I-fetus inezinhlobo ze-convex, okwenza umphumela ube yizitho ezingezansi nezingaphezulu.

Isiteji sokuthuthukiswa kwenkathi ye-embryonic sibonakala esikhathini esiphakathi kwamasonto ayishumi nambili nesishiyagalolunye. Kule nkathi kuphela, ukusebenza kwezitho ezihlukahlukene zombungu kubonakala. Futhi ngalesi sigaba, ukuthuthukiswa kwenqubo ye-muscular kuphelele kubonakala. Kukhona ama-dydiments wamazinyo. Phakathi nalesi sikhathi, ingane iqala ukusabela kwisisusa sangaphandle (ukukhanya, ukushisa nemisindo).

Loku okuthiwa isikhathi se-embryonic sekwephuzile kanye nentuthuko ngesikhathi sokukhulelwa kwezingane ezizayo kubangelwa ukubonakaliswa okucacile kwamafomu angaphandle eduze kwezokugcina. Kusukela evikini lama-27 kuze kube sekuzalweni, umntwana ubonakala afana nokuqala kokuzalwa. Ngalesi sikhathi, umama uthatha isakhiwo esiphezulu futhi avuke, ngenkathi eqhubeka phambili.

Ngemuva kwamasonto angu-29, ukuthuthukiswa kwengane kubhekwa njengokuphelele. Ngaleso sikhathi, izitho ezihlukahlukene kanye nezinhlelo ze-fetus zakhiwe ngokugcwele, futhi ngenxa yendlela yokwakhiwa kwemisipha nezicubu ze-adipose, isisindo saso sikhula ngokuphawulekayo.

Ngesikhathi sokuqala umntwana uvula amehlo akhe eduze nesonto lama-26. Esibelethweni, umntfwana uba mncane kakhulu. Ngesonto lama-28 lokukhulelwa, i-fetus igcwalisa isikhala sonke. Kakade kusukela ekuqaleni kweviki lama-32, umntwana usungule ngokugcwele amaphaphu, angasebenza ngokugcwele. Kusukela ngesonto lama-35, umzimba uthatha isimo esifana ne-roundness, futhi siba yinto encane. Ukuvuthwa kwazo zonke izinhlelo zokuphila komuntu ngamunye kuyaqhubeka ngenyanga yesishiyagalolunye. Indawo ekuqaleni kwekhanda endaweni yesikhumba ingane ifika ngesonto lama-40. Ngesikhathi sokusondela ekubelethweni, isisu somfazi siyokhubeka ngokunyuka. Phakathi nalesi sikhathi, kubaluleke kakhulu ukwenza izingqungquthela ezikhethekile zokujikeleza kwezitho zomzimba njengokungenzeka, okuzokwenza kube lula ukuzwa okungajabulisayo komama ozayo.

Ngokwezibalo ezijwayelekile, ukukhulelwa kuthatha izinsuku ezingama-280 (izinyanga eziyishumi zenyanga). Ukubala kokuthuthukiswa kwe-fetus ngesikhathi sokukhulelwa kanye nokuqala kokukhulelwa ngokwakho kuqalile kusukela ngosuku lokuqala lokuya esikhathini sokugcina. Izinyanga ezithintekayo kakhulu zomama kanye nezingane ezizayo zibhekwa njengenkathi yokuqala, yesibili nesikhashana se-embryonic.