I-yolk sac kuyinto: kuyini? Umsebenzi nokubaluleka ye-yolk sac ngesikhathi sokukhulelwa

Abesifazane abaningi abakhulelwe unesithakazelo imibuzo ngalokho imisebenzi eyenziwa yi-yolk sac, kwakheka lokho oyikho lapho kukhona. Phela, akuyona imfihlo ukuthi lokhu iyincenye lebalulekile kakhulu ekuqinisekiseni ukuthuthukiswa evamile umbungu.

Isikhuphasha sac - kuyini?

Phakathi luhlolo ultrasound kusaqalwa yokukhulelwa udokotela uyazinaka ubukhulu kanye nokuthuthukiswa kwaleli isakhiwo esithile. Isikhuphasha sac - isitho ekhethekile extraembryonic, okuyinto kwakheka izigaba zokuqala zokukhulelwa futhi ezinyangeni zokuqala lenza imisebenzi ebalulekile kakhulu. Itholakala esifundeni enkabeni futhi owokuqala ihlobene eduze amathumbu fetus. Kwakheka Ukwakheka kwezitho iseli mesoderm, futhi has simise indandatho izindonga mncane.

Imisebenzi esemqoka ye-yolk sac

Eqinisweni, imfundo kubaluleke kakhulu. Ezigabeni zokuqala yentuthuko nele-embryo ne isikhuphasha sac kuhlobene. Okokuqala, lesi sakhiwo ungumthombo izakhamzimba. Okwesibili, yolk sac ngenkuthalo abahilelekile ukuphefumula.

Cishe ngosuku weshumi nesishiyagalombili yokukhulelwa e-yolk sac kuqala ziqala ukwakheka kwamangqamuzana egazi abomvu. Lesi sakhiwo futhi kuqinisekisa ukwakheka capillary kuqala, esuka lapho esikhathini esizayo ezothuthukiswa fetus isimiso sokujikeleza kwegazi.

Ngosuku 28 igciwane amaseli lokuqala akhiwa ezindongeni isikhwama, kamuva laba isisekelo segama ukuthuthukiswa kwe-gonads futhi uhlelo zokuzala ingane. Ngaphezu kwalokho, yolk sac phakathi namasonto okuqala ayisithupha kokwenza umsebenzi sesibindi: kuba ezicutshini zakhe agcinwayo zonke imithi enobungozi kanye ubuthi.

Njengoba ubona, lokhu imfundo ibalulekile ngoba evamile kwengane esiswini. Uma-yolk sac akuyona nokusebenza ngendlela efanele, kwakusongela isisu nokuguqulwa.

Inkinga ikuphi-ingabe yolk sac?

Njalo umama okhulelwe Kuyaziwa ukuthi ngesikhathi sokukhulelwa umsebenzi umbungu esibalulekile incike ekusebenzeni kanye nesimo umzanyana. Kodwa lapho enza womthubi? Ezinyangeni zokuqala ezintathu nele-embryo ne-placenta isikhathi ukwakha ngokugcwele. Kulesi sigaba, kwakhiwe esinomhlapho kwegazi uhlobo, futhi-yolk sac ayidingeki. izicubu zayo kancane kancane. Kuze kube sekupheleni ekhulelwe imfundo iqhubeka njengoba nginesimila encane, etholakala eduze umzanyana.

Ingabe kuyingozi ukwandisa womthubi?

Njengoba lesi sakhiwo kubalulekile kakhulu, kungokwemvelo ukuthi zihlolwe ngesikhathi ultrasound. It kungabonakala kusukela ngesonto wesithupha nje ebamba isisu. Ngezinye sokukhulelwa amasonto 12 ', yolk sac ayikwazi uphenyo usebenzisa ultrasound.

5-10 usayizi ngesonto zasesikhwameni akumele leqe 5.5 mm. Kodwa abesifazane, abakhulelwe amasonto 8-12, ubukhulu ekwakhekeni, njengoba umthetho, imayelana 2 mm.

Kodwa ngezinye izikhathi udokotela uphawula ukuthi kunyuke-yolk sac. Kusho ukuthini lokhu nendlela kuyingozi? Empeleni, noma yimuphi ukuphambuka kusuka kuyinsakavukela kungase kubonise ukuphila kwakhe engozini ukuze ukukhulelwa. Njengoba ungacabanga, lokhu akuyona uphethwe esichazayo, kusukela kudingeka nezinye, ucwaningo olwengeziwe. Ngokwesibonelo, ukwanda womthubi akunakubangelwa Ukudla, imithi ethile noma ukucindezeleka okunzima. Kunoma ikuphi, kwaba nemiphumela efanayo US kudingeka ukuthumela wezifo zabesifazane. Yodwa a specialist uyazi ukuthi kungani-yolk sac zingandiswa, ukuthi kusho futhi ukuthi impatho eyisipesheli edingekayo.