Iziphumo zotywala ekukhuleni iiseli eyintsholongwane nokuzala

utywala ethyl kuba yingozi hayi kuphela kwiiseli intsholongwane abantu, kodwa kwakhona kwamadlala ngokwabo i sex. Iingxaki kunye nokuzala amadoda kunye nabafazi asele utywala, zahluke kakhulu ngenxa ukuyilwa iiseli lwegciwane imithetho osobennstey. Lula ukunxila okanye utywala akubanyamezeli iiseli zesini eyindoda, ikhowudi yezofuzo leyo, nangona nawezonakeleyo phantsi kweempembelelo ethanol, kodwa ziveliswa amadoda kubo bonke ubomi babo. Ngokuqhelekileyo, indawo ngokupheleleyo inkqubo entsha isidoda ithatha ukuya kwiinyanga ezintathu.

Noko ke, ingozi enkulu utywala amadoda ayikho ukutshintsha nesakhiwo sakhe ngesondo leeseli, kwaye ngokoyiswa le gonads. La maziko kufuneka inkqubo ethile igazi, efana ukuba ubuchopho, nto leyo esisizathu sokuba utywala unyityilikiswa egazini, angahlala ixesha elide apho. Ngenxa yoko, kukho ubani angakwazi na uhlobo madlozi kunye neeseli, ezo banoxanduva secretion of emzimbeni (testosterone). Ngoko ke, umntu, kuba ixesha elide, zona ziyawazi ukunxila okanye utywala, sele namathuba ephakamileyo zaso ntsholongwane iya kuveliswa kwaoko abakhubazeke ezithile. Ukongeza, ngenxa yokunqongophala hormone oyindoda kakhulu ukutshintsha ukuziphatha kwalo, apho kuya kubakho ngezifo kwenkqubo zokuzala, ukuba induku.

Kubonakala ukuba kungenzeka ibe mbi ngakumbi neziphumo kakubi kotywala umzimba oyindoda? Kodwa abafazi iingxaki ezinxulumene umonakalo kwiiseli lwegciwane utywala kunye namadlala apho nosizana, hayi kuthathelwa ingqalelo into yokuba butywala ababhinqileyo ephuhlisa kakhulu ngokukhawuleza kwaye igqalwa libulale. Isibakala sokuba iiseli zesini sabafazi (ova) zenzeka ngexesha lobomi, kokubini kumadoda, kwaye sele ngexesha wokuzalwa "egciniweyo" de nokwanda ngokupheleleyo ndinikhululele kungena lweHo- zesibeleko (ovulation). Ngenxa yoko, nkqu lwamkelo utywala engatshatanga (nangona akuyomfuneko) ukuba konyusa ingozi yokuba umntwana engekho mpilweni. Kodwa kusenokwenzeka ukuba kukho umfazi ofuna ukuvavanya kwaloku ngokwalo (nokuba ngaba ngaphezu cent omnye ngalinye). Ukuba umfazi usela utywala rhoqo, le amathuba kwandisa amaxesha amaninzi.

Isiphumo kotywala kwi kowesi- lokuzala kunye nenkqubo yonyango emeleneyo naleyo echazwe umzimba eyindoda. Umahluko ilele kuphela yokuba amabhinqa aye kwanciphisa umsebenzi hormone ababhinqileyo egazini ngelixa sisenyusa uyazikhomba testosterone, yaye idla secreted yi umfazi. Ngenxa yoku, ukutshintsha inkangeleko yayo, kuza masculinization (obhinqileyo iimpawu ilahleko) kunye notshintsho yokuziphatha. Ngokukodwa, utshintsho kunye nokuziphatha abafazi ngokunxulumene umntwana ulahlekelwa ezininzi nethuku ezinxulumene nkhathalelo yenzala.

Ukongeza, inkqubo zokuzala ukusela amabhinqa rhoqo abakhuselekanga ngamandla etshabalalisayo utywala, ngenxa leyo kakhulu kwandisa amathuba nenzalo, kwabadala kwezi bafazi kwenzeka kwiminyaka eli-15 ngaphambilana ngaphezu esempilweni.

Ngokumalunga nabantwana abazelwe ngabazali utywala, i iziphene ezithile rhoqo egcine, maxa wambi ukuya phezulu ube sengozini. Avamise kakhulu utywala foetal alcohol syndrome, babonise ukulibaziseka iqola ingqondo nomzimba lo mntwana.