Kubalulekile ukwazi ukuba isonto lesithoba lokubeleka lokukhulelwa ngokwenene malunga neveki yesixhenxe ukususela ngexesha lokukhulelwa. Bachaza oku ngeyona nkcazelo yokuba ixesha lokukhulelwa liyakubalwa ukusuka kwinyanga yokugqibela, kwaye kungekhona ngomhla wokukhulelwa kweqanda.
Ngeveki yesithoba iqala ngenyanga yesithathu yokukhulelwa. Ngaloo ndlela, i- trimester yokuqala iya kufikelela ekupheleni. Ngelo xesha, umfazi udla ngokuqonda imeko yakhe. Ubhaliso lwamazinyo obunomthwalo wokukhulelwa.
Iiveki ezisixhenxe zeeyonto - kwenzeka ntoni kumntwana?
Ngoko, ngeveki 9 umntwana sele usethiwa isiqhamo. Ubude bayo bu-2-3 cm, kwaye ubunzima buhluka phakathi kwama-5 no-15 amagremu. Intloko yesisu ibukeka ingahambelani nomzimba wayo, kodwa ngokukhawuleza ithola umhlathi oqhelekileyo. Umntwana ukhula entanyeni, ulungele umlenze, kwaye oko kuthiwa "umsila" uba ngu-coccyx.
Amehlo e-fetus avulekile ngeveki yesithoba, iindlebe ezibonakalayo zibonakala. Umlomo wakhe uvele ufana nomlomo wakhe. Ukuphatha kunye nemilenze yengane ibe yinde, iminwe ikhula ixesha elide, iinyawo zanda. Kule iminwe i-marigolds eyahlukeneyo, eyakhiwe kwi-epidermis ehlanganisiweyo. Umntwana usenokukwazi ukwahlula izibonda.
Ngeveki 9, umntwana udala iindawo ezibalulekileyo zeengqondo, kunye nenkqubo yonke ye-nervous. Uluhlu oluphakathi lwentsimbi ye-adrenal evelisa i-adrenaline yenziwa. Intliziyo, ukubetha ngejubane ezili-130-150 ngeengqungquthela ngeminithi, akusayi kuphinda kuqhutywe iifubho ngaphandle kwesibindi, imiphunga ihlakulela umthi womhlaza.
Imeko yowesifazane kwiiveki ezithintekayo zokukhulelwa
Ngeli xesha, i-placenta iqala ukusebenza ngamandla onke, kwaye ngoko emva kweiveki ezi-9, umngcipheko wokuphuphuma kwesisu uncibilike, ngaphandle kokuba i-placenta ihlangabezana ngokugqibeleleyo nomsebenzi wayo wokuxhasa ukukhulelwa nokunyusa umntwana.
Iveki yesithoba yesigxina ibonakala ngolu tshintsho olulandelayo kumzimba kamama:
- ukwandisa izinga le-hCG (i- chorionic gonadotropin );
- ukhula lukhula;
- kukho ukuvakalelwa okubuhlungu kwiintlanzi ezincinci;
- Ukuphindaphinda kwexesha lokunciphisa umjikelo kuncipha;
- inani legazi elijikelezayo linyuka ngama-40%, ngoko ke iinjongo, intliziyo kunye nemiphunga isebenza ngendlela eqinisiweyo.
Ukongezelela, umzimba wexesha elizayo umama uqokelela amafutha, i-anemia ingenzeka. Ibhinqa liyakwazi ukuqhubeka liva iimpawu zesifo soxinasi. Inokuchaphazeleka ngokulala nokukhathala.