Cishe eminyakeni eyi-10 amantombazane aqala isikhathi sokwakheka ngokocansi, ngesikhathi sokuthuthukiswa komzimba nentombazane. Kakade uneminyaka engama-18-20 le ntombazane isifinyelele ngokuphelele ekuvuthweni kocansi, ngokomzimba nangokwenhlalo futhi isilungele ngokuphelele ukufeza umsebenzi wokubeletha. Njengomthetho, ekuqaleni kwalesi sikhathi, izinguquko ze-hormonal emantombazaneni eminyakeni eyishumi ziqala ukusebenza, ezithinta izinguquko eziningi emzimbeni wentsha.
Izinguquko ze-Hormonal
Ngakho-ke, mayelana nezinguquko ze-hormonal kumantombazane eminyakeni eyishumi, ke phakathi nalesi sikhathi kukhona izinguquko ezibonakalayo ekusebenzeni komzimba. Ngakho-ke, isibonelo, ama-ovaries amantombazane esikhathini esiqashiwe (lesi sikhathi, isigaba sokuqala esiqala ngeminyaka engu-10-13 futhi kubangelwa ukwakhiwa komjikelezo wansuku zonke nokukhiqizwa kwe-estrogen emaqanda ama-ovari) ngaphansi kohulumeni njalo kuhloswe ukukhululwa kwe-hormone estrogen, emikhiqizo yayo elawulwa siza hypothalamus (ingxenye yengqondo). Lokhu kwenzeka ngesistimu "yempendulo" futhi ikuvumela ukuba unikeze ukusekelwa kokuhlushwa kwe-hormone ngezinga elithile nelinye. Kodwa ngesikhathi sokuhlelwa kabusha komzimba kanye nesikhathi sokukhulelwa, "ukulungiswa" kwezinguquko ze-hypothalamus futhi ngokuphathelene nalokhu kunyuke okuphawulekayo ekuqaliseni i-estrogen ngama-ovari, okuholela ekuhlungeni kwe-hormone egazini. Ngokuphathelene nale nqubo, kwamanye amantombazane, isisindo sonke somzimba singakhula kakhulu.
Futhi phakathi nalesi sikhathi, izinguquko ze-hormone zenzeka hhayi kuphela ezingeni lokukhuphula inani le-estrogens elihamba ngegazi, kodwa ngokuhamba kwesikhathi, kukhona ushintsho emkhatsini wokukhiqizwa kwe-progesterone eyenziwe ngama-ovari ngesikhathi sokuvuna. Zonke lezi zinguquko zithinta kakhulu iningi lezinhlelo zentombazane futhi ngaleyo ndlela ziholele ekuguqulweni kwezinto eziphilayo.
Leyo mantombazane eneminyaka engu-10 enomzimba ophansi we-fat fat, ngokuvamile ehamba ngemuva kweontanga yakhe ngokuphathelene nesikhathi sokuqala kokukhulelwa. Okokuqala, lokhu kungenxa yokuthi inani lamafutha emzimbeni wentombazane lihlobene ngqo nokukhiqizwa kwamahomoni.
Ngendlela, ama-hormone, njengombuso, ehambisana ne-sex-androgens yesilisa nangamanani amancane we-testosterone, nawo afana nesimo sempilo yensikazi, kodwa akhona kuwo ngamaqoqo amancane kakhulu. La mahomoni enza imisebenzi eminingi enenjongo. Ngakho, isibonelo, banesibopho sokukhula kwezinwele emzimbeni.
Ukunyuka kwama-hormonal nokwandisa izinga labo emzimbeni wesintombazane ngesikhathi sokuqokwa kocansi kungabangelwa izinguquko ezihlukahlukene esimweni sengqondo somntwana, isibonelo, ukushintshashintsha ngokomzwelo, ukuguquka kwesimo sengqondo njalo, ukukhathazeka njalo nokukhathazeka.
I-spike yama-Hormonal nezinguquko zomzimba
Esigabeni sokuqala sokukhulelwa, ukukhula okujulile kwama-ovari kanye nezinye izitho zangaphakathi zokuzala ziqala. Imikhiqizo ihlukumezeka, ngalesi sikhathi bathatha ukuphakama komsebenzi wabo.
Ithonya lamanoni emzimbeni ekuguqulweni kokusakazwa kuqala: emantombazaneni obukhuni obunzima bokubeletha kwenzeka esikhathini esingaphambili, futhi emantombazaneni amancane amancane anesisindo esincane kukhona ukulibaziseka ekuguquleni komzimba emzimbeni.
Ngenxa yezinga lama-hormone ekhulayo emzimbeni, intombazane iqala ukuthola amafomu: i-mammary gland yanda, izwi liyancipha, izinwele ze-pubic ziqala ukuvela. Le nqubo ibizwa ngokuthi ukuvela kwezici zobunikazi zesibili. Emva kwalokho, kukhona ukubonakala okusheshayo kokukhula, okuyinto ekhuthazwa ukwanda kwe-hormone yezocansi, i-hormone yokukhula nesinye isici esithile, esibizwa ngokuthi i-insulin-efana nokukhula kwe-factor I. Yiyo kanye le ndlela yokuthi esikhathini esiyiminyaka eyishumi kuya kweyishumi nambili, amantombazane akhula kakhulu ontanga yabafana, futhi ngemva kokusobala ukuthi ukushaywa kwe-hormone esebenzayo okuhambisana nayo yonke inkathi yokukhulelwa kwamantombazane.