I-trimester yesithathu yokukhulelwa iqala cishe amasonto angama-26-27 okuphila komntwana ngaphakathi kwesisu. Ingane isivele inezo zonke izitho ezisemqoka ezisebenzayo, nakuba zide zingaphelele. Namuhla sizokhuluma ngokuthuthukiswa kwe-fetus ngesonto lama-27 lokukhulelwa nokuthi yiziphi izinguquko ezenzeka ngalesi sikhathi emzimbeni wesifazane.
Baby
Kusukela kuleli sonto, izinga lokusinda kwengane uma kwenzeka ukulethwa ngaphambi kwesikhathi kungu-85%. Manje ingane ikwazi ukusebenza kahle, nakuba ukugcwaliswa okugcwele kuzoqedwa ngemva kwamasonto angu-13 egcwele. Emasontweni angama-27, le-fetus isesimweni esincane futhi encane, kodwa seyivele ingaphandle uma kuyoba khona lapho kuzalwa. Ubude obuphelele buba ngu-35 cm, isisindo - 0.9-1 kg. I-crumb namanje inekamelo elanele lokwenza okusebenzayo: liya, ligebha, lihamba imilenze nezingalo zalo, liqeqesha izingalo zalo eziqinisayo. Ngezinye izikhathi ungakwazi ukuqagela ukuthi iyiphi ingxenye yomzimba wengane ehlala ngokumelene nomama esiswini.
Amehlo wengane akwazi ukusabela ekukhanyeni kudlula odongeni lwesisu. Umculo we-rhythm kanye nezwi lomama, umntwana ulungile nokubona. I-reflex yokusondeza ithuthukiswe kahle, ivame ukuthatha iminwe. Ngokuvamile ingane iyayibamba, lokhu kwenzeka embungu ngesonto 27 nangaphezulu. Isizathu se-hiccups singumngcingo we- amniotic fluid. Lokhu kunomthelela ekuthuthukiseni amaphaphu, ngoba asezingeni eliqondile. Kusukela emavikini angu-27, ukuthuthukiswa kobuchopho besisu kuqhubekela phambili ngokushesha. Abanye ochwepheshe bayaqiniseka ukuthi ngalesi sigaba ingane isivele ibona amaphupho. Ukuphefumula kwangaphandle kanye nokudla okunomsoco kwenziwa njengasekuqaleni kwe-placenta. Ukwehliswa kwe-fetus ngesonto lama-27 kuyi-stroke engu-140-150, kuyilapho kuqhutshwa umzimba wokuphefumula okungu-40 ngomzuzu.
Umama
Isibeletho sowesifazane okhulelwe ekuqaleni kwe-trimester yesithathu sikhuphuka ngaphezu kwenkaba nge 5-7 cm.