Kwiminyaka eyi-14 ukuya kwe-15 ukuya kwintsapho, i-cardiovascular system ye-fetus iphuhliswe kakuhle, kwaye ngekhanda layo elincinci elinomsoco ophezulu, unokubona iinqanawa ezinkulu. Intliziyo isebenza ngokunyanisekileyo kwaye iipompo malunga neekitha ezili-20 zegazi ngosuku. Kungenxa yolu phawu oluninzi lwegazi apho isikhumba sibomvu.
Iinguqu eziphambili kumntwana
Ngethuba le-14 ukuya kwe-15 lokukhulelwa, ukusebenziselwa isilwanyana kubantwana, kuhamba kunye nokukhutshwa kwe-bile, ebuye ifike emathunjini amakhulu. Kwixesha elizayo, umlenze wokuqala womntwana uya kuvela kuwo.
Ngenxa yokuba izintso zomntwana ziqala ukusebenza ngokuphangaleleyo, isenzo sokukhupha i-vestile senzeke kaninzi. Nangona kunjalo, umntwana uziva ekhululekile kwi- amniotic fluid , ekhutshwe amaxesha angama-10 ngosuku.
Kwiveki yesi-14 ukuya kwe-15 yokuphuhliswa komntwana, inkqubo yokuphefumula iyafezeka. Ngethuba le nkqubela imfuyo encinci ikhula kwaye iqeqesha izihlunu, kuquka ukuphefumula. Oku kubangelwa kukuba i-fetus iguqula ngezikhathi ezithile kwaye ikhupha i-amniotic fluid. Ezi zinto zenza igalelo ekubunzeni amathisipu emiphunga, ngaloo ndlela silungiselela inkqubo yokuphefumula yokuqala kwe-inhalation.
Umntwana kwiiveki ezi-14 ukuya ku-15 uqala isigaba esibalulekileyo sophuhliso - i-cortex yenziwe. Le nkqubo iqhubeka kulo lonke inyanga. Yingakho umfazi akufanele akhiphe nayiphina imiphumo emibi emzimbeni wakhe. Bobabini i-hemispheres yengqondo ihlanganiswe ne-groove kunye ne-convolutions. Ngelo xesha, iiseli zesiswini ziqala ukwahlula kwazo, ekugqibeleni ziphela ekubunjweni kwenkqubo ye-nervous.
Kwixesha lokukhulelwa iiveki ezi-14 ukuya ku-15 ziqala ukusekwa kwenkqubo ye-endocrine. Ukuqala ngokuqala ukusebenzisa izigulane, ngokukodwa, ngokuzenzekelayo kunye nokuthuthumela. Ngalesi sikhathi, umntwana usenokusabela ngokutya okudliwe ngumama, ekubeni i-receptors yamnandi yenziwe ekugqibeleni.
Kwiiveki ezi-14 ukuya ku-15, iintambo zomlomo we-fetal sele zenziwe ngokupheleleyo. Kulo xesha ngeli xesha kuvulwa i-glottis.
Umama ozayo uza kutshintsha njani?
Kwiinguqu ezibonakalayo eziphawulwe kumfazi okhulelwe, omnye unokubonisa ubungqina bomgca obomdaka obulula ukusuka kwindandatho yomdaka ukuya kwi-pubis. Ukubonakala kwayo kulula ukuchazwa ngento yokuba, ngokubhekisele kwenguqu kwimvelaphi ye-hormonal epheleleyo, ukuhlukana okukhulu kwe-melanin pigment kwenzeka, ngenxa yokuba ibhanki ibumba. Uyanyamalala eyedwa emva kokuba umfazi abelethe.
Kwiiveki ezi-14 ukuya kwe-15 ukuya kwesisu isesele sibonakala. Yonke imihla, ubukhulu bayo buyanda. Yingakho umfazi eqala ukuhlaziya ikhabethe yakhe ukuze azive ekhululekile, kuba iimpahla ezindala sele zincinci.
Ngalesi sikhathi, njengomthetho, umhla ozalwa ngawo usuvele uwaziwa.
Ubuninzi begazi eliphuma kwi-14-15 iveki yokukhulelwa lunokuba ngumqondiso kwisongelo sokupheliswa kokukhulelwa . Xa zivela, ibhinqa kufuneka lidibane nodokotela ngaphandle kokulibala. Xa kuphuma igazi, oogqirha bahlambulula isisu, oko kukuthi, benza ukukhupha isisu. Ngaphandle koko, le meko ingakhokelela ekufeni komfazi okhulelweyo.