Embryogenesis

Uphuhliso osandul iqala kwi akhulelwe kuqhubeka de umntu ehlabathini. Ngokubanzi Uphuhliso natal luquka izigaba 2: iinyanga ezimbini zokuqala - osandul, kwaye ezilandelayo (3-9) kuthiwa Palsy. Uphuhliso Natal ithatha malunga 280 iintsuku, okanye iinyanga-9. Umbungu practice yokubelekisa kuthiwa ndiseyimbumba, leyo senzeka umzimba malunga neenyanga ezimbini, ngoko umbungu ngokuthi umntwana.

Uphuhliso osandul ukususela ekukhulelweni de ekuzalweni

esingxotyeni dystrophy epithelial lifinyele, ebangela iqanda sisinge Imibhobho tube somyeni, iiseli lwegciwane eyindoda. Ngenxa yoko, ukufaka isichumiso kwenzeka. Iqanda ingangena ubudoda omnye kuphela, yaza yajikela libonakala iqokobhe olukhuselayo ethintela ukungena kwezinye isidoda. Uphuhliso osandul iqala ezo eziba ezimbini ekwenzeni iseti ethile zofuzo. Emva koko iqalisa zokuqala zophuhliso umbungu, ezo iiseli sahlukana abo ezininzi ezincinane.

Itakane utya koovimba sac, ukuze ke eqandeni. Emva kwexesha elithile umbungu engena wesibeleko kwaye kwenzeka uthimbo, okanye umzila. Kakade ngomhla 7th usana kancane busuka isibeleko. Emva koko, umbungu uqalisa ukuvelisa gonadotropin chorionic, yincindi, nto leyo uphawu unina ukukhulelwa elandelayo (oko kukuthi, ibonelela ukuvela ndimfuduka mbini kwi-test).

10-14 imini umbungu, uphuhliso ibanjwa ngesantya eqhelekileyo, kuba amaxesha ngaphezulu kwama-2. Okulandelayo Uphuhliso osandul kwenzeka ngokukhawuleza ngokukhawuleza. Inkqubo luvo uqalisa ukwakha sele ngomhla wama-20 yokukhulelwa. Emva kweeveki ezintathu, intliziyo wosana olo ibetha. Isithuba nama-28, a umqolo kunye nezihlunu. Ngoncedo lwe ultrasound ebonakalayo iingalo, imilenze, iindlebe kunye amehlo umntwana.

Ngeentsuku nje ezingama-30, ubukhulu komntwana liye landa amawaka 10 amaxesha, kwaye uyaqhubeka ukuphuhlisa ngokukhawuleza. kwiintsuku ezintlanu emva koko iminwe kubonakala phezu izandla neenyawo, amehlo mnyama njengoko usana umzimba iphuhlisa ngombala okhethekileyo.

Isithuba seeveki 6, ingqondo uqalisa ukulawula intshukumo intliziyo kunye nemisipha mbungu. Isibindi uvelisa iiseli zegazi. Emva kwenye iveki khona ngonaphakade umntwana, ekhusela amehlo ukusuka ukoma kunye nokukhanya. Kweli nqanaba ukukhulelwa eli kwasekwa engaphandle kunye indlebe engaphakathi le primordia baby izinyo kuvela kwaye uqale ukuthatha imilo kwemihlathi. Nakuba kunjalo, utshintsho zibalulekileyo okuphawulekayo kukuba lo mntu uqala ihamba esibelekweni. Ngelishwa, yena mncinane kakhulu ukuba unina waziva ezi perturbations.

iiveki 8 - isehlakalo ebalulekileyo kuphuhliso wosana. Kweli nqanaba wophuhliso, oko sele kukhangeleka ngathi umntu. ubukhulu wayo 2 kuphela, 5 cm, yaye ithe emana intliziyo, kuncitshiswa izihlunu, umntu uzuza neempawu ezithile, yaye umzimba aphendule ukuchukumisa. Emva kweeveki 2 umntwana ekhula ukuya ku-4 cm kwaye inobunzima malunga grams ezimbini. Eli xesha luphawulwa ukuyilwa eveze wosana olo.

Xa beneeveki ezili-12 ukuba usana umnwe wakhe ngamandla uqeqesha nemisipha. Umntwana uqala ukuguqula intloko yakho, agobe iminwe yakho izibambo, ukuze uvule uze uvale umlomo. Kweli umbungu kota akuvayo nakubonayo, uyawavala iindlebe zakhe ukuphendula izandi ezibukhali kwaye uyemka umqadi eliqaqambileyo ukukhanya. Phakathi 16 ukuya 24 utshintsho ngeveki asebenzayo kwenzeka enamakhulu kwinkangeleko iinwele, isiliya. Baby incumile, hiccups, kwaye unina ukubona ngokucacileyo. Ukususela kwiiveki 24 kuphuhliso 34 osandul phantse ngokupheleleyo, usana sele ngokukhululekileyo ichaza iimvakalelo (uvuyo, umsindo, ingqumbo). Yena uyakwazi ukubona amaphupha. Lo mfanekiso ubonisa isiponji anyuswe okanye ngoncumo. kwiiveki 36-38 is final uphuhliso yeqonga mntwana. Ngoku ukulungele azalwe.