Embryogenesis

Amfrayo ci gaba fara a ganewa da kuma ci gaba har zuwa wani mutum a cikin duniya. Kullum Natal cin kunshi 2 bulan: na farko da watanni biyu - tayi, kuma m (3-9) an kira fetal. Natal ci gaba yana game 280 kwanaki, ko watanni 9. Tayi a obstetric yi ne ake kira tayi, wanda tasowa a cikin jiki domin game da watanni biyu, sa'an nan da tayi ne ake kira tayi.

Amfrayo ci gaba daga hadi har zuwa haihuwa

Murdede epithelial daina kai hare hare an rage, haifar da kwai su matsa zuwa wajen fallopian tube maniyyi, namiji jam sel. A sakamakon haka, hadi faruwa. A kwai iya shiga daya kawai maniyyi, sa'an nan a kusa da shi ya bayyana da m harsashi da cewa ya hana ingress sauran maniyyi. Amfrayo cin farawa da Fusion na biyu nuclei kafa musamman sa na chromosomes. Bayan da cewa yana farawa farkon matakai na tayi ci gaba, wanda su ne Kwayoyin rarrabu cikin kananan su.

The yaro ci da gwaiduwa reserves, da cewa su ne a cikin kwai. Bayan wani lokaci da tayi ta shiga cikin mahaifa da kuma abin da aka makala ya auku, ko kafawa. Tuni a cikin 7th rana da jariri da aka hankali ya gabatar a cikin mahaifa. Bayan nan, da tayi ya fara nuna chorionic gonadotropin, a hormone, wanda shi ne wata sigina zuwa ga uwar da tarzomar ciki (wato, shi na samar da bayyanar biyu makada a kan gwajin).

10-14 rana tayi, ci gaban da aka gudanar a wata al'ada taki, shi ya zama fiye da sau 2. Next tayi ci gaban auku hanzari da sauri. A juyayi tsarin fara da nunawa riga a kan 20th rana ciki. Bayan makonni uku, da baby ta zuciya beats. Domin wani lokaci na kimanin kwanaki 28, a kashin baya da kuma tsokoki. Da taimakon duban dan tayi a bayyane makamai, kafafu, kunnuwa da idanu na wani yaro.

A kawai kwana 30, girman jariri ya karu 10 dubu sau, da kuma ci gaba da halittu farfadowa cikin sauri. Kwanaki biyar bayan da discernible yatsunsu a cikin hannuwansu da ƙafãfunsu kuma idanu duhu kamar yadda jiki baby tasowa musamman pigment.

Domin wani lokaci na 6 makonni, kwakwalwa fara sarrafa yunkuri na zuciya da kuma tsokoki amfrayo. A hanta samar da maikacin jini. Bayan wani mako a can har abada baby, wanda kare idanu daga rashin ruwa da kuma haske. A wannan mataki na ciki da aka rayayye kafa da matsanancin da kuma can cikin kunne na da jariri hakori primordia bayyana da kuma fara dauki siffar da muƙamuƙi. Duk da haka, mafi muhimmanci kuma gagarumin canji ne cewa mutumin yana farawa motsi a cikin mahaifa. Abin baƙin ciki, ya ke ma matasa zuwa uwar ji wadannan perturbations.

8 makonni - wani muhimmin milestone a cikin ci gaban da jariri. A wannan mataki na ci gaba, shi riga kama wani mutum. Its size ne kawai 2, 5 cm, kuma shi ya steadily doke zuciya, rage tsoka, mutum yakan mallaki wasu halaye, da kuma jiki amsa ga shãfe. Bayan makonni 2 da yaro ke tsiro zuwa 4 cm da kuma weighs kamar biyu grams. Wannan lokaci ne halin da samuwar jaririn ta al'aurar.

A 12 makonni da ya tsotsa ta yatsa da kuma vigorously horar da tsokoki. Baby fara jũyar da kai, tanƙwara yatsunsu a kan iyawa, don bude da kuma rufe bakin. A wannan lokaci tayin ganinSa da jinSa, rufe kunnuwansa a mayar da martani ga kaifi sauti, kuma ya finjire daga haske masaƙa. Tsakanin 16 zuwa 24 mako-mako aiki canje-canje faruwa wanda ya kunshi a cikin bayyanar gashi, cilia. Baby aka yi murmushi, hiccups, da kuma mahaifiyar ji shi sosai. Daga 24 makonni a kan 34th tayi ci gaba ne da kusan cikakkiyar, jariri ya riga yardar kaina nuna motsin zuciyarmu (farin ciki, fushi, fushi). Ya iya ganin mafarkai. The m ya nuna da inflated soso ko murmushi. 36-38 makonni ne karshe ci gaban da yaro mataki. Yanzu ya shirye da za a haifa.