Iqanda kunye ne-spermatozoon ziiseli ezimbini, kwi-confluence apho umntu ozayo uza kuqala ukuphuhlisa. Banoba nolwazi oluyimvelaphi ekhethekileyo olumisela kuphela ubulili bomntu, kodwa nokubonakala kwakhe, umlingiswa, isimo sempilo kunye nokunye. Umzuzu wokuqala komntu omtsha wobomi uhlala ubangela umdla.
Uwuphi umehluko phakathi kweqanda kunye nesidoda?
Amaqanda akhiwa emzimbeni wowesifazane nakwizinga lokuphuhliswa kombungu, uzalelwa ngamaqanda amawaka angama-400, angama-200-400 kuphela aya kuvuthwa aze ashiye i-ovary ebomini bakhe bonke, kuxhomekeke kwinani lemijikelezo yokuya esikhathini. I-ovum yowesibini iyona iseli enkulu kunazo zonke emzimbeni, inokwakheka kwembewu yepoppy, kwaye kwisitya sePetri sinokubonwa ngeso iso. Inomfanekiso ojikelezayo, ngaphakathi kwayo yi-cytoplasm kunye nenucleus. Ukongeza, ngokukhawuleza emva kokushiya i-ovary, ijikelezwe yindawo eninzi ye-epithelium, eya kutshatyalaliswa ngokukhawuleza njengoko iqanda lidlula kwi-tube fallopian. Iqanda alikwazi ukuhamba ngokuzimela.
I-Spermatozoon yiseli encinci. Kubukeka ngathi i-tadpole, inentloko enkulu, ebonakalayo ingaba yinto ejikelezayo okanye idibeneyo, kunye nomsila omncinci. Ngenxa yesondo, intombi ifikelela kwizigidi eziliqela ze-spermatozoa kwisibeletho somfazi, kodwa enye kuphela, inamandla kunazo zonke kwaye ikhawuleza, iya kukwazi ukutshiza iqanda, eliya kufutshane neseli elivuthiweyo ngaphambili kwabanye. Inambuzane ithatha ulwazi lofuzo lobawo, oluya kudluliselwa kwinzala, phantse i-40% yalo iqukethe izakhiwo ze-DNA ezichaza iimpawu zentsana yakho. I-Spermatozoa ihambela ngokukhawuleza, ngelixa liyakwazi ukunqoba umgama wamangentimitha amabini.
Kukuphi ukuchumisa okwenzekayo?
Iqanda kunye ne-spermatozoon zifunyenwe, njengommiselo, kwiibhulo zomzimba, ezidibanisa i-uterus kunye ne-ovary. I-Spermatozoa iwela kwiibhulo zomzimba ezisuka kwisini, kwaye zizalisa zombini iibhubhu, kwaye iqela liphuma kuphela kwelinye lama-ovari. Kwiiyure ezimbalwa, iqanda liza kuzaliswa kwaye liqale uhambo lwayo kwi-uterus ngokusebenzisa iibhubhu ezimbi. Le ndlela iza kuthatha iseli kwiintsuku eziliqela.
Ngeli xesha, iiseli ezimbini ziza kubelana ngokuzibandakanya, zenze umntwana ozayo, izitho zawo eziphambili. Iintsuku ezingama-7-10 emva kokuchumisa, iseli iya kuhambelana ne-epithelium, ehlanganiswe nesigxina se-uterine, kwaye iqala ukudala i-embryo kunye ne-amniotic fluid ezalisa ngokuthe ngcembe yonke indawo yesibindi kwaye ibe yiplacenta eyondla umntwana kuze kube ngexesha lokuzalwa kwayo.
Iqanda lizaliswa njani?
Enye imbambano ebalulekileyo yindlela umdaka ungena ngayo iqanda. Ngaphandle, iseli ihlanganiswe ngoluhlu lwe-epithelium, kwaye isidoda kufuneka siphume kwi-epithelium, ngenxa yoko, isebenzisa umsila. Ngaphantsi kweeseli yinto ekhohlisayo, apho idiza inamathele kwaye iyaqhubeka iqhubeka. Iqela le-spermatozoa liyakwazi ukukhuphisana kwindawo yokuqala, kodwa ke kuphela ukukhawuleza kwabo kuya kufinyelela kwinucleus kwaye bazalise inkqubo yokuchumisa.
Zingaphi i-spermatozoons elinde iqanda?
Iqanda likulungele ukuchumisa ixesha elincinci, malunga neeyure ezingama-24. Ukuba ngelo xesha akukho spermatozoa kufuphi, ukuchumisa akuyi kwenzeka. Nangona kunjalo, i-spermatozoa ngokwabo ixhomekeke ngakumbi, kwicandelo lomzimba labesifazane abanokufikelela kwiintsuku ezingama-7 (ngokuqhelekileyo - iintsuku ezi-3). Oku kwandisa amathuba okuchumisa.
Iqanda kunye nesidoda yilezi zimbini ezibalulekileyo apho umntwana wakho uya kukhula khona, ahluke omnye komnye kwiimpawu ezahlukeneyo, azalise kunye kwaye avelise ubomi obutsha.