Dzira la fetus ndi chimodzi mwa zizindikiro zoyamba ndi zodalirika za mimba yokhayokha ya uterine. Kuwona mapangidwe apamwamba pa ultrasound angakhale kale masabata awiri mutachedwa kuchedwa. Pa nthawi yomweyi, malingana ndi zomwe mazira a fetus amawoneka, osati nthawi yokhayokha, komanso momwe amachitira, komanso kukhalapo kwina, zimatsimikizika. Chizoloŵezi chimakhala chizoloŵezi chokhazikika, ndipo zopunduka zilizonse ndizo nthawi yowonjezerapo kufufuza ndi kuyang'anitsitsa nthawi zonse.
Mkhalidwe wa dzira la fetal
Pa gawo loyamba la mimba fetasi ya fetal ndi gulu la maselo omwe akupitiriza kugawa pa njira yopita kuchiberekero. Dzira ili ndi chapamwamba chapamwamba - chophiri, chomwe chimaonetsetsa kuti oxygen ndi zakudya zowonjezera zimaperekedwa.
Pa siteji yotsiriza ya mimba, dzira la fetal imatenga kale chiberekero chonsecho ndipo chimakhala ndi mwana wamwamuna, amniotic fluid ndi membranes, umbilical cord, placenta. Kulemera kwa dzira la fetal ndi chipatso chokhwima kale liri pafupifupi 5 kg.
Feteleza ndi kukula kwa dzira la fetal
Pambuyo pa umuna, dzira limayamba ku chiberekero. Pakati pa kayendetsedwe kameneka, njira yogawanika imachitika, ndipo nthawi yomwe dzira lili m'chiberekero, pali kale maselo 32. Kuyenda kumatenga masiku 7 mpaka 10.
Pambuyo pa ovum atakwanitsa cholinga chake, dzira la fetus limaphatikizidwa pa khoma mu chiberekero - chisa. Pa kayendetsedwe ka dzira kupyolera mu mazira opangira pa dzira la fetus, chapamwamba chapamwamba chimakhazikitsidwa, chomwe chimatulutsa ma enzyme omwe amawononga mucous nembanemba ya chiberekero. Dzira lofanana la fetal ndi lovundikira ndi villi, mothandizidwa ndi chiberekero ndi chiberekero kumachitika pachigawo choyamba cha mimba. Pambuyo pake, villi amakhalabe pa malo ochezera.
Zindikirani kuti mazira awiri a fetus amavumbulutsidwa pa ultrasound amasonyeza mimba yambiri. Mazira oposa awiri kapena kuposa omwe amapezeka mu chiberekero amatanthauzidwa ngati mawonekedwe okhazikika, omwe amasiyanitsidwa kale kuchokera masabata asanu ndi asanu ndi limodzi.
Vuto la kukula kwa dzira la fetal
Pa siteji ya chisokonezo, pali ziwerengero zingapo. Kotero, mwachitsanzo, kulumikizana bwino kwa dzira la fetal kumadalira kufulumira kwa kayendetsedwe kake kupyolera mu mazira oyenda. Ngati dzira linasunthira mofulumira kwambiri, ndiye kuti nembidzi za dzira la fetal sichikhala ndi nthawi yokwanira. Izi zikutanthauza kuti dzira silingapezeke pa khoma la chiberekero, lomwe, monga lamulo, limabweretsa kuperewera kwa amayi.
Ndiponso, chida chochepa cha dzira la fetal n'kotheka. Mbali iyi siingakhale yoopsa kwa mwana ndi mayi, koma imafunika kuyang'aniridwa nthawi zonse. Kuonjezerapo, ngati dzira la fetus lili pansi, pali chiopsezo chotchedwa chiberekero cha mimba. Pankhaniyi, kuchitapo kanthu mwamsanga n'kofunikira, popeza kutenga mimba kotero sikungasungidwe, ndipo kwa amayi, matendawa amachititsa kuti chiberekero chichoke.
Tiyenera kuzindikira kuti pamene mimba yayimitsidwa, nkofunika kuonetsetsa kuti dzira la fetalali lapita kwathunthu. Ngati chifukwa cha kupititsa padera kapena matenda ena aliwonse osakhazikitsidwa, ndiye kuti histology ya egg fetal ikuchitika.
Ndi ectopic mimba imawoneka chomwe chimatchedwa chinyengo cha fetal. Ndipotu, dzira ngati limeneli
Matenda aakulu ndi dzira lopanda kanthu . Zifukwa izi zingakhale zingapo: zaka za mayi, matenda a majini, kugwiritsa ntchito mankhwala omwe amatsutsana ndi mimba. Pachifukwa ichi, kwa masabata awiri, dzira lopanda kanthu lopanda kanthu ndilozoloŵera, popeza chipatso cha nthawi yotere sichiri chowoneka. Koma ngati pakapita nthawi mankhwalawa amatsimikiziridwa, ndiye kuti kusunga mimba koteroko sikungakhale kwanzeru. Pachifukwa ichi, akudandaula zachipatala.