The yolk sac ndi: ndi chiyani icho? Ntchito ndi mtengo wa yolk sac pa mimba

akazi ambiri pakati ndi chidwi mafunso pa zimene zimagwira ntchito zimagwiridwa ndi yolk sac, icho chiri ndi pamene pali. Ndipotu palibe chinsinsi chimene ichi ndi chinthu chofunika kwambiri mu kuonetsetsa chitukuko wabwinobwino wa mwana wosabadwayo ndi.

Yolk sac - ndichiyani?

Pa ultrasound tione magawo oyambirira mimba dokotala amamvetsera kukula ndi chitukuko cha dongosolo imeneyi. Yolk sac - wapadera extraembryonic limba, lomwe linakhazikitsidwa mu magawo oyambirira mimba ndi miyezi pogwira ntchito yofunika kwambiri. Malowa ali pamtunda m'dera umbilical ndi woyamba kumagwirizana ndi intestine yoopsa. Kupangidwa ndi mapangidwe selo mesoderm, ndipo imakhala ndi mkombero mawonekedwe ndi makoma woonda.

Ntchito yaikulu ya yolk sac

Ndipotu, maphunziro ndi ofunika kwambiri. Mu masiteji koyamba chitukuko cha mwana wosabadwayo ndi yolk sac n'zogwirizana. Choyamba, nyumba imeneyi ndi gwero la zakudya. Kachiwiri yolk sac akutithandiza zedi mu ndondomeko ya kupuma.

Za tsiku chakhumi ndi chisanu ndi chitatu cha mimba mu yolk sac loyamba anayamba kupanga maselo ofiira. nyumba imeneyi komanso amaonetsetsa mapangidwe a capillary woyamba, umene m'tsogolo adzakhala anayamba yoopsa mitsempha ya magazi.

Pa tsiku 28 maselo woyamba nyongolosi anapanga m'makoma thumba, amene anakhala maziko a chitukuko cha gonads ndi dongosolo ubereki wabwino wa mwanayo. Komanso, yolk sac pankhondo yoyamba masabata asanu wochita ntchito chiwindi: ndi mu zimakhala wake anapitiriza zinthu zonse woopsawo ndi poizoni.

Monga mukuonera, maphunziro n'kofunika kuti chitukuko yachibadwa yoopsa. Ngati yolk sac si bwino ntchito, izo anaopseza mowiriza mimba.

Kodi yolk sac?

Lililonse mayi woyembekezera amadziwika kuti ali woyembekezera ndi mwana wosabadwayo ntchito yofunika zimadalira kugwira ntchito ndi udindo wa latuluka lapansi. Koma kodi yolk sac? Kwa miyezi itatu wa mwana wosabadwayo ndi latuluka nthawi kupanga kwathunthu. Pa nthawi imeneyi, pachilengedwe cha mtundu placental kufalitsidwa, ndi yolk sac kuti muthe. minofu yake pang'onopang'ono mpaka kusanduka. Mpaka mapeto a mimba ndi maphunziro amalimbikira monga chotupa wamng'ono, wapafupi chingwe umbilical.

N'koopsa kuonjezera yolk sac?

Popeza dongosolo limeneli ndi lofunika kwambiri, ndi zachilendo kuti anayendera pa ultrasound lapansi. Iwo Tingaone sabata chimodzi mimba. Pa gestation masabata 12, ndi yolk sac sangathe ankafufuza ntchito ultrasound.

5-10 sabata kukula thumba sayenera upambana 5.5 mm. Koma akazi, pakati masabata 8-12, kukula kwa mapangidwe, monga ulamuliro, ndi za 2 mm.

Koma nthawi zina dotolo anati adakula yolk sac. Kodi izi zikutanthauza chiyani ndi mmene koopsa ndi? Ndipotu, zopatuka aliyense mwakale zingasonyeze chiopsezo cha mimba. Mwachibadwa, zimenezi si matenda okhazikika, chifukwa muyenera zina, kufufuza zina. Mwachitsanzo, kuwonjezeka mu yolk sac akhoza zimachitika zakudya, mukumwa mankhwala kapena nkhawa kwambiri. Mulimonsemo, ndi zotsatirapo US ayenera kutumiza kwa gynecologist lapansi. Only katswiri amadziwa chifukwa yolk sac akhoza zochuluka, chomwe chimatanthauza, ndipo kaya chithandizo chapadera chofunika.