Emaqanda ama-ovari, amangqamuzana omzimba wesifazane (ama-ovules) avuthiwe, ukuphazamiseka okubandakanya izinkinga ngokukhulelwa kwengane. Futhi nokho le seli liqinile kunazo zonke phakathi kwamanye amaningi.
Bangaki ova emzimbeni wesifazane?
Ngisho nasesiswini sikamama, intombazane ithola inani elithile le-ovules, elizungezwe yi-follicles. Enye intombazane ezalwa, inani lamaqanda liyizigidi eziningana, futhi kusele iminyaka engamakhulu ayisishiyagalombili ukukhula. Kubalulekile ukuba nombono wokuthi mangaki ama-ovules owesifazane, futhi uyaqonda ukuthi ngeminyaka, inombolo yabo ayanda. Ngokuphambene nalokho, iyancipha kuphela. Eqinisweni, ngokungafani nesidoda sesilisa, iqanda alivuseleli kulo wesifazane. Kukholelwa ukuthi uma uneminyaka engama-35 kunamaqanda angaba ngu-70,000 kuphela, amaningi awo angenaphutha. Kodwa ngisho le namba yamaqanda ngokuvamile akwanele ukuba owesifazane akhulelwe.
Inqubo yokuvuthwa kweqanda
Iqanda liqala ukuvuthwa ebusheni, lapho kuqaliswa ukujikeleza kokuya esikhathini. Ngakho-ke, kucacile ukuthi i-ovum ivuleka kaningi kangakanani kulo mzuzwana - lokhu kwenzeka kanye ngesikhathi somjikelezo wenyanga. Ngesikhathi sokuvuthwa, uma iqanda elivuthiwe lishiya i-ovary futhi lithunyelwa ku-spermatozoon, lona wesifazane unethuba lokukhulelwa.
Isikhathi sokuvuthwa kweqanda singadlulela ezinsukwini eziyisishiyagalombili kuya enyangeni, kepha ngokwesilinganiso sithatha amasonto amabili. Okokuqala, ngaphansi kwesenzo se-follicle-eshukumisa i-hormone, i-follicle iqala ukukhula ku-ovary. Kuyaziwa ukuthi amangaki ama-ovules ku-follicle ayingxenye eyodwa ekhethiwe ukuvotela kule mjikelezo. Okokuqala, ububanzi be-follicle neqanda buyi-millimeter eyodwa, futhi ngemva kwamasonto amabili kakade kufinyelela kumamitha amabili. Ukuvuthwa kwenzeka phakathi nomjikelezo, lapho i-pituitary gland inika inani elibalulekile lokumisa i-hormone. Isikhathi sokuphila se-ovum emva kokuvuthwa kwamahora ngamahora angu-24.
Owesifazane uhlala cishe imijikelezo yezinsuku ezingaba ngu-400, okusho ukuthi izinkulungwane zamaqanda emzimbeni wakhe kufanele ziwanele ukukhulelwe. Kodwa inkinga akukhona nje kuphela ukuthi uma uneminyaka yobudala ye-ova iba yincinjana, kodwa nokuthi iqiniso lokuthi kancane kancane balahlekelwa izinga labo. Ngakho-ke, kubalulekile ukuthi kubone ukuthi mangaki ama-oocyte owesifazane okwamanje anakho nokuthi isimo sakhe siyini. Izindlela ezintsha zokuthola indawo yokugcina ama-ovari ziyasungulwa. Ukuhlolwa okuphumelelayo kwenani lamaqanda kungukuhlolwa kwe-EFORT, okuyinto enquma impendulo ye-ovary ekufakweni kwe-horlicone-evuselela i-hormone emzimbeni.