Amnios y capas germinales

Guión: Mugihe cy'icyumweru 1, utuburungu tw'imbere mu kabumbe kanini dukora bugenzi bwatwo bubiri twiswe imirongo y'imbere no hasi n'igaragara hanze.

Hypoblast niyo ituma umuhondo w'igi ukura ariwo ufite uburyo umubyeyi agaburiramo aho umwana atangirira.

Utuburungu tuva kuri epiblast dukora icyitwa amnion (urukoko rukomeye) arimo isoro na kera hazaza igi rizakura kugeza kubyara.

Mugihe hafi ibyumweru 2 1/2 epiblast iba yarabaye impu 3 zidasanzwe, cyangwa nk'imbuto ifite uruhumbu, yiswe uruhu rw'inyuma, uruhu rw'imbere, n'uruhu rw'imbere cyane.

Uruhu rw'inyuma nirwo rutuma byose bikura harimo n'ubwonko, urura rw'izinze, ubuzima, uruhu, inzara, n'umusatsi.

Uruhu rw'imbere nirwo rutanga uburyo bwo guhumeka n'uburyo bwo gustya ibiryo, nirwo rutuma ibihimba byinshi by'umubiri nk'umwijima ndetse n'urwagashya bikura.

Uruhu rw'imbere cyane rugize umutima, impyiko, amagufwa, ingingo inyama z'umubiri, utuburungu tw'amaraso n'ibindi bihimba by'umubiri.