Indawo yomntwana ", ebonakalayo kwisibeleko ngexesha lexesha lomzimba, ibizwa ngokuba yi-placenta kwaye yenye yezona ziko zizodwa kwaye ziyinkimbinkimbi. Imisebenzi yepentecenta ngokugcwele ayikwazi ukutshintshwa yiyiphi na ifoni yezobugcisa okanye amalungiselelo.
Iyintoni i-placenta?
Eli thuba lenziwe ngendalo ukuqinisekisa zonke iinkalo zophuhliso olupheleleyo lomntwana ngaphakathi kwesibeleko kwaye ukhusele ukuphuphuma kwangaphambili kwimithwalo. Ubaluleka obubalulekileyo kwi- placenta ekukhulelweni kukuba akubandakanyi ukufikelela kwisiqhamo sezinto eziyingozi ezifana ne-nicotine, utywala, iziyobisi kunye njalo njalo. Nangona kunjalo, akuyiyo yonke imisebenzi eyintloko yepentecenta. Ukuba ubonisa umdla omkhulu kwimisebenzi yayo kunye nenjongo yemfundo, unokufunda izinto ezininzi ezithakazelisayo.
Yimiphi imisebenzi yepentecenta?
Kwinqanaba langoku lokuphuhliswa kweyeza, ezinjalo iinkalo zokusebenza "kwindawo yomntwana" njenge:
- utshintshiselwano lwe-oksijini kunye ne-carbon dioxide phakathi kwemithambo yegazi yomntwana kunye nokhulelwe ;
- ukubonelelwa kwezondlo kwintsana, eyabelwe kwigazi lomama, lwenziwa. Ukungalawulwa okungekhoyo kubuyela kumfazi;
- Iqumrhu elisezantsi liyakwazi ukukhusela umntwana kwiintsholongwane, izigulane, iibhoksi kunye neebhaktheriya ezingena emzimbeni womama. Oku kubonakaliswa kwemisebenzi yomzimba;
- Umsebenzi we-endocrine we-placenta uqulethwe ngokwahlukana kwezinto ezithile, usebenza njengesigxina se-secretion yangaphakathi;
- Umsebenzi we-hormonal we-placenta ubonakaliswa yimfihlo yee-hormone eziyimfuneko ukulungelelaniswa ngokukhawuleza umzimba womfazi okhulelwe kwisithuba esitsha kuye kunye nokukhuselwa komntwana. IHormones ye-placenta imelwe yi-estrone, i-progesterone, i-hCG njalonjalo.
Ukwazi ukuba yiyiphi imisebenzi eyenziwa yi-placenta, inceda umama ozayo ukuba aqonde ngokupheleleyo ukubaluleka kwakhe kwaye abonise unonophelo olukhulu kunokwenzeka kwimpilo yakhe.