Amayi ambiri amtsogolo amaganiza kuti placenta ndi chikhodzodzo ndi chimodzimodzi. Ndipotu, izi siziri choncho. The placenta ndi mawonekedwe odziimira omwe amapereka zakudya ndi mpweya ku fetus. Ndi kudzera mwa iye kuti mwana wakhanda amagwirizana ndi thupi la mayi.
Chikhodzodzo cha fetus ndi chiyani?
Kukula kwa ziwalo izi zimayamba nthawi yomweyo . Motero, amnion ndi memphane yochepa kwambiri, yomwe imakhala ndi timagulu tomwe timagwiritsa ntchito.
Choriyumu yosalala imakhala pakati pa amnion ndi decidua. Lili ndi mitsempha yambiri ya mitsempha.
Chiwalochi chimakhala pakati pa dzira la fetal ndi myometrium.
Zomwe zimayambitsa fetal chikhodzodzo ndi kukula kwake ndi kukula kwake, komwe kumasiyana ndi masabata a mimba. Kotero, pa tsiku la 30, kukula kwa chikhodzodzo cha fetus ndi 1 mm ndiyeno kumawonjezeka ndi 1 mm tsiku.
Kodi ntchito za chikhodzodzo cha fetus ndi ziti?
- kusakaniza zinthu zosiyanasiyana zomwe zimapereka chitetezo cha mthupi;
- Kusinthanitsa kwa mafuta (kusungirako amniotic fluid composition);
- kusunga ndi kuyeretsa amniotic madzi;
- zopangira zamagetsi;
- kumasulidwa kwa mankhwala omwe amachititsa kuti pakhale mimba;
- chitetezo (kuyang'anira mwanayo kuchokera ku matenda ndi kuvulala).