Sac-sac

Okokuqala ukondla umzimba iziqhamo - le Huy sac. Liyana, okanye mandithi nje ixesha kakuhle nasisihlo - 15-16 ngemini iqanda. Kuyinto into eyenziwa ukusuka endoblasticheskogo iqamza, ethatyathwe embryoblast. Le imfundo encinane, apho wadibana ngqo kunye iqanda iyodwa kumafa yayo imisebenzi eziyenzayo.

Umdla kukuba yeyona sac sac ekuchithekeni ukuyilwa iiseli zegazi kunye nothungelwano capillary amancinci. Kakade iintsuku 18-20 zamaqanda foetal kulo uyakwazi ukubona umnatha ezincinci zegazi.

Ngenxa yoko, umzimba mnye yezinto ezibalulekileyo ngekamva wosana. Enyanisweni, kude kube mzuzu xa umkhaya ayakhekanga umnatha oxineneyo igazi, zonke izondlo ndiseyimbumba aya kuthathwa ukuyilwa sac.

Kakade ngawo ngomhla wama-30 we-sac sac ohambisa iiseli yintsholongwane iphambili umbungu - uqalisa ukwakha inkqubo baby zokuzala. Abantu abaninzi bacinga ukuba ngeli xesha lokuba ukusombulula, owazalwa inkwenkwe okanye intombazana. Noko ke, abazali abatsha kufuneka bazi ukuba ngesondo lo mntwana kodwa isigqibo ngexesha neqanda, kunye nazo zonke ezinye izigaba zophuhliso kuyilwa kuphela imizimba, ngokungqinelana ne ulwazi yemfuza.

iimpawu ezininzi welungu lokondla zaseprayimari ayipheli apho. Phakathi kwezinye izinto, kwiiveki ukuya ku-6 sac sac ezingekazalwa nesibindi lenza umsebenzi, kodwa kunokuba synthesizes iiproteni: Alpha-fetoprotein, transferrin, alpha 2-microglobulin.

Kufuneka kukhunjulwe ukuba umzimba kusekho uhlobo iqokobhe kunye neziqhamo, de omzimba asinto nako ukumelana kwamagciwane kunokwenzeka. Isibakala sokuba amalungu ophambili Ingane ngokuzimeleyo ukuvelisa macrophage ukuba ulwe usulelo. Ngenxa yoko, ikhusela iqanda ukusuka nefuthe elibi ezivela ngaphandle.

Loo inkqubo yemibutho kunye nonikezelo iziqhamo lide kakhulu, ekupheleni ezintathu yokuqala ye-sac kwehlisa sac kwaye iba imfundo encinane yosana. Ngeli xesha, yonke imisebenzi yayo ukuba azithathele ngumkhaya ibunjiwe namanye amaziko olungekazalwa.

Kufuneka ke ukuba, ngenxa yaso nasiphi na isizathu, lokusekwa sac uqalisa umva ukuya kwindawo, kuya kuba njani na ngumkhaya kunye nezinye imfundo ebalulekileyo, kwesisu kunokwenzeka okanye ukufa Palsy. Kungenxa yoko le nto kukho ixesha elithile xa kuyimfuneko Kwathi ultrasound.

njani ukufumana le sac sac kwaye siqinisekise ukusebenza kwayo?

Abasetyhini abazilungiselela ukuzalwa komntwana, mhlawumbi sele ufunde kwi ncwadi ukuba ultrasound sac kuyabonakala kuphela kwiiveki ezi-6 zophuhliso ezingekazalwa, kwaye kwezinye iimeko kamva. Oku kube ngenxa inkalo lilungiselelo iqanda okanye uvakalelo le sixhobo.

Ukuba ultrasound ndithi kuni, ukuba sac sac awukhuselekanga nangoko mfuneko ukuphaphazela. Mamela kwagqirha de kube sekupheleni. Ngokuqinisekileyo uya kusityela izinto zonke.

Kukho ezahlukeneyo ezininzi ngezifo kokukhulelwa, apho engxoweni lifinyele kwangoko kakhulu, okanye zange ziphuhliswe ngokwanele. Umfazi ufanele uqonde ukuba xa uphatha ukugcina ukukhulelwa, amathuba malformations ezinjalo usana kabini.

Kufuneka wathi esweni yophuhliso sac wemfundo ukuya kwiiveki ezili-12 zokukhulelwa uyakwazi ukuthetha ngendlela ukuqhubeka phambili kunye nophuhliso ndingekazalwa, ziintoni ezinobuzaza nazo oogqirha kunye nabazali.

Kukho into enje njenge "isisu ephosiweyo" - yinto ngezifo le sac sac, apho ibe amancinci non-esebenza. Umbungu ufikelela kwinqanaba elithile yophuhliso, kwaye akwanelanga ukuba ezinye izondlo ukukhula. Kwimeko enjalo kuyimfuneko ukucoca lweHo- zesibeleko ngokusebenzisana kunyango hormone.