Unjani ukukhulelwa komntwana

Indlela ukukhulelwa komntwana okwenzekayo ayengaziwa kuwo wonke umntu. Nangona amanqaku amaninzi, izifundo esikolweni, kwimfundo ephakamileyo, ingakumbi kwizonyango, zinikezelwa kulo mbandela. Ngoko umntwana ukhulelwe njani? Makhe siqwalasele ngokubanzi kwinqaku.

Ukuzalwa kobomi kuyinkqubo emangalisayo. Iqala ngochumiso lweqanda lomama kunye nesidoda sikayise. Ngexesha lokwebelana ngesondo, izigidi ze-spermatozoa zifudukela kwi-ovum. Nangona kunjalo, kuphela omnye wabo owenza oko. Ngqabileyo yeqanda elivuthiweyo, i-spermatozoon ingena ngokukhawuleza. Emva koko, enye i-spermatozoon ayiyi kukwazi ukwenza into efanayo nangayiphi indlela. Kule meko, kuphela intloko ingena kwiqanda, umsila uhlala ngaphandle. Le nxalenye yatshatyalaliswa kamva.

Ngethuba apho intloko yesilisa yindoda ingena kwi-ovum, i-chromosomes yayo kunye neqanda ngokwayo zidibanisa enye. Yingakho inani lama-chromosomes kwiseli elitsha elitsha elitsha lilingana namashumi amane anesithandathu. Njengomphumo wale nqubo, kuthiwa yi-zygote, ihambela kwisibilini se-uterine ezimbini iintsuku ezintathu. Kwangexesha elide i-zygote yahlula, i-blastula yenziwa.

Iseli elitsha linemiqolo emininzi. Uluhlu oluphezulu lubizwa ngokuba yi-trophoblast. Ikhupha i-enzymes ekhethekileyo. Bayakwazi ukuchithwa umgca ngqo kwi-uterus. Emva koko, ukuqina okunzulu kuvela. Kule mphophu umphumo uza kubhaptiza iqanda lomntwana. Le nkqubo ibizwa ngokuba yi-implantation yiingcali. Igama eliqhelekileyo kubantu abaninzi, intsingiselo yalo iyahluka kwiimeko ezahlukeneyo. Ukuba zibalwa ngeentsuku, ngoko kulo mzekelo ukufakelwa kwenzeke malunga nentsuku yesixhenxe emva kokuchumisa i-oocyte. Ukuba ukufika kweli nqanaba iqanda liye lachazwa kuyo nayiphi na ingozi, lifa okanye lonakaliswe kwezinye iindawo. Nangona kunjalo, emva koko, ukubuyiswa kwayo ngokutsha kunokwenzeka.

Kamva, iifom membrane ifom ephuma kwi trophoblast. Kukho uninzi kubo, enye yalezi iigobolondo kuthiwa yi-chorion. I-Chorion i-villi, leyo ibonisa i-placenta. Imfundo yakhe iqala ngeveki yesibhozo yokukhulelwa. Ngokwakhelwe ngokupheleleyo, eli xesha liwela ngeveki elinesine. I-Placenta ibaluleke kakhulu ekuphuhlisweni komntwana. Eli lilungu eliza kusebenza ngaphambi kokuzalwa nokuzalwa komntwana. Ngokuqhelekileyo, ukubonakala kwale placenta kufana nekhefu eliqhelekileyo. Ububanzi bayo buyikubhite ezingamatshumi amabini ukuya kumashumi mabini anesithandathu, ngelixa ubukhulu bayo buyingxenye enye nesiqingatha ukuya kweesentimitha ezimbini.

Ukususela kwi-placenta ukuya kumntwana okhulayo, kukho iinqanawa ezininzi. Zizungezwe yinto ekhethekileyo. Le yintambo yomlomo. I-placenta yinkqubo eyenza imisebenzi eminingi ebomini bomntwana. Le miphunga, isibindi, kunye neentso zomzimba okhulayo. Ukongezelela, ngokusebenzisa izondlo zifanelekile kumntwana, imveliso ye-fetal metabolism ikhutshwe, utshintshiselwano lwegesi olubalulekileyo luyenziwa. I-placenta inikeza ukujikeleza kwe-utero-placental evamile.

Indlela ukukhulelwa komntwana kwenzeka ngayo kuchazwe ngasentla. Kufuneka kuqatshelwe ukuba ngoku, nanini na umntu unokufumana okanye afunde ubuninzi beenkcukacha kule nkqubo. Kukho uncwadi olukhethekileyo oluthetha indlela ukukhulelwa komntwana kwenzeka ngayo. Kufuneka kuqatshelwe ukuba wonke umfazi osemtsha ozinikezele kwesi sihloko esibangelisayo nesihloko esithi "Impembelelo engeyona nto yokusela kotywala ekukhulelweni komntwana". Umama ozayo kufuneka abe nengcamango yokuba kwenzeka ntoni. Ngombulelo kulolu lwazi, unokukwazi ukuphepha ubunzima neengxaki ezininzi, gcina ukukhulelwa kwakhe aze abelethe umntwana ophilileyo. Ixesha lokukhulelwa komntwana aluncedo.