Ukuphela kwentsha ngaphambi kwesikhathi
Ukukhulelwa kusengaphambili kusuke kuthathwa njengokweqiniso uma kuhlotshaniswa nezinga eliphezulu kakhulu lamahomoni amabili akhiqizwa yi-pituitary: i-follicle stimulating (FSH) ne-luteinizing hormone (LH), ebizwa ngokuthi i-gonadotropins. La mahomoni akhuthaza izilonda zocansi (testes nama-ovaries). I-FSH ne-LH ibalulekile ekuthuthukiseni ngokocansi okuvamile. Uma zikhiqizwa ngokweqile, ukukhulelwa kungafika ngaphambi kwesikhathi futhi uqhubeke ngokushesha. Ukukhula kwangempela ngaphambi kwesikhathi, ikakhulukazi ezinsizweni ezincane, kungase kuhlotshaniswe nezinguquko zesakhiwo ebuchosheni, isibonelo, ngenxa yezifo ezibangelwa ukubeletha ezifana ne-hydrocephalus (i-hydrocephalus), kanye nokuncipha kwengubo ye-thyroid.
Ukukhulelwa kwentsha ngaphambi kwesikhathi
Mayelana nokukhulelwa kokuqala kokukhuluma kungakhulumi uma kuqhathaniswa ne-FSH ne-LH, kodwa kunezimo eziholela ekwandeni izinga lokuhambisa ama-hormone e-sex (testosterone kubafana nase-estrogens kumantombazane). Ukukhulelwa kwentsha engakabiphi kungavamile kakhulu kuneqiniso, futhi izimbangela zayo zingaba izicubu zama-ovari, ama-testes kanye nama-adrenals, kanye ne-steroids yomlomo. Ukuze kunqobe ubunzima obuhambisana nezinguquko esimweni sengqondo nokuziphatha ngenxa yokukhulelwa ngaphambi kwesikhathi, ingane nentsha yakhe idinga ukululekwa kwengqondo nokusekelwa. Lezi zinguquko zinikeza ukukhathazeka okwengeziwe kokukhulelwa ngaphambi kwesikhathi kunokujwayelekile. Ukuqaphela izingane ezincane kungaphansi kwezingane ezindala, kulungele ukunqoba izinkinga ezihambisana nokuvuthwa komzimba kanye nomthelela wamahomoni.
• Ukwelulekwa ngabanye kuvame ukusiza izingane ezincane ezinenkinga yokukhulelwa kwasekuqaleni.
Iziphambeko zixilongwa
Ukuxilongwa okungafanelekile kokukhulelwa ngaphambi kwesikhathi kungenziwa ezimweni ezilandelayo:
- Ukuthuthukiswa kusengaphambili kwezingcingo ezincelisayo
Kwamanye amantombazane, izilonda ezincelisayo zingakhula ngesayizi ezineminyaka eyisithupha kuya eminyakeni emibili. Le nqubo ingaba yodwa noma ihlangene. Kule nkinga, ayikho izinwele ze-pubic nokugxuma kokukhula. Lesi simo akusona uphawu lwesifo futhi asidingi ukwelashwa.
- Ukuxilongwa okubuhlungu kokukhulelwa ngaphambi kwesikhathi
Emantombazaneni angaphansi kweminyaka eyisishiyagalolunye kanye nabafana abangaphansi kweminyaka eyisishiyagalolunye, ukukhula kwe-pubic kungenzeka ngokungabikho kwezinye izici zesondo zobulili. Ngokuvamile lokhu kubonakala kubantwana emazweni ase-Asia, e-Afrika naseCaribbean. Isimo esinjalo singahlotshaniswa nokusheshisa okwesikhashana kwamazinga okukhula. Ukwelashwa ngokuvamile akudingeki, noma kunjalo, uma lezi zenzakalo zibonakala ezinganeni ezingaphansi kweminyaka eyisithupha ubudala, lokhu kungase kubangele ukukhathazeka. Ukukhulelwa ngaphambi kokuqala kubafana akuvamile kakhulu kunamantombazane, futhi kuvame ukuhlotshaniswa nesifo esibi, njengesifo socansi. Uma lo mfana enezibonakaliso zokukhulelwa ngaphambi kwesikhathi, ikakhulukazi ehambisana nokunyuka kwamanye amakhemikhali, imbangela ivame ukukhula kwe-hormone ye-pituitary (i-FSH ne-LH) egazini. Kodwa-ke, uma ngesikhathi sokukhulelwa intsha isetshenziselwa ukukhuliswa kwesigcawu esisodwa, umuntu angasolisa isisu sakhe. Uma umfana enezibonakaliso zangaphandle zobusana, kodwa unezintambo ezincane (prepubertal) ezithuthuka kancane kunezinye izingxenye zomzimba, lokhu kungasho ukuthi imbangela yokukhulelwa ngaphambi kwesikhathi kungukungasebenzi kahle.
Ukuphathwa kweziguli
Isinyathelo sokuqala ekwelapheni iziguli ezinenkathi yokuthomba ngaphambi kwesikhathi ukuhlonza isisusa salo. Esikhathini sokuqala, kubalulekile ukukhipha isisu sobuchopho. Uma imbangela ibonakala, izinyathelo zihlelelwe ukuqedwa kwazo ngokuphumelelayo.
Ukukhula kwe-skeleton
Ukuvuthwa ngokocansi, kokubili okujwayelekile futhi kungakapheli isikhathi, kuhambisana nokuthuthukiswa kwamasipha. Ngemuva kokuthi i-jump in growing in the period of pubertal, amathambo ama-tubular amade emigqeni ayayeka ukukhula. Ukukhulelwa kusengaphambili kusuke kuhlotshaniswa nesifushane esifushane, njengoba ukukhula kwamathambo kulezi zincishiswe phansi, bese kuphelelwa yisikhathi esingaphansi kunempilo. Ukukhula okuncane kungaba nethonya elinamandla kwengqondo kwengane, ngakho-ke, ekukhuleni okungakabiphi, ingxenye ebalulekile yokwelapha isinciphisa izinga lokubunjwa kwesistimu yethambo. Isizathu sokukhulelwa ngaphambi kwesikhathi emantombazaneni akuvamile. Ngokuvamile kuvame ukubonakaliswa kokuqala kwezibonakaliso zobusana obuvamile. Kulesi simo, ukukhulelwa kuzoqhubeka ngendlela efanayo nokuthi uma iqala ngesikhathi esifanelekile. Lolu hlobo lokukhulelwa ngaphambi kokubeletha lungaba yifa elilodwa kanye necala elilodwa lapho ukukhubazeka okufanayo kwakungekho emlandweni womndeni.
Izifo ezilindelwe
Ukusola ukuthi intombazane yanoma isiphi isifo kuyadingeka uma kwenzeka ukuthi ukuvuthwa kocansi kungenzeki ngokwezikweletu ezijwayelekile; isibonelo, ngesikhathi esifanayo kanye nokukhula kwezigulane ezincelisayo ezinyangeni ze-pubis, izinwele kuphela zivela noma ukuthuthukiswa kwezinhlamvu zobunqunu zocansi kwenzeka ngokushesha kunokuba kuvamile. Esinye salezi zifo yisifo sika-Albright-McCun, esibhekene nokulimala esikhunjeni, amathambo nezigulane ze-endocrine, kanye nokuya esikhathini ngaphambi kwesikhathi. Futhi, ukuba khona kwanoma yisiphi isifo esivelele kufanele kusolwa uma kunezibonakaliso zokulimala komqondo.
Ukuhlolwa
Uma useneminyaka eyishumi nambili ukukhulelwa kwentombazane, amathuba okuba nesifo esifihlekile angahlolwa ngokusebenzisa ama-ultrasound ezithombeni zomzimba. Kulokhu, lesi sibeletho nama-ovaries ahlolwe ikakhulukazi. Uma ukukhulelwa kwasekuqaleni kunguquko ejwayelekile, futhi akuyona imbangela yalesi sifo, ukuhlolwa kwe-ultrasound kuzoqinisekisa izinguquko ezilindelekile ezingxenyeni zangaphakathi ezenzeka ngesikhathi sobusha obuvamile. Ikakhulukazi, i-ultrasound izobonisa ukwanda kwesibeletho kanye nama-cysts amaningi kuma-ovari. Ukungabi khona kwalezi zici kumele kuqaphele udokotela wezingane. Noma kunjalo, ezimweni eziningi, akukho okungajwayelekile - futhi asikho isidingo sokuhlolwa okuqhubekayo.