Ingaba isisu sishukumisela njani kwiqanda?
Ngokweentlobano ezingavumelekanga, malunga ne-2-3 ml ye- seminal fluid ingena kumfazi wesifazana , ngokuqhelekileyo iqulethe ngaphezu kwe-100 yezigidi zegciwane zentsholongwane.
Ukusuka kwisisu, i-spermatozoa iqala ukuqhubela phambili kwintsholongwane ukuze ingene emgodleni wayo, kwaye ke i-tube fallopian. Ukuhamba kweeseli zesini zesini kukhuthazwa ngokunyanzelana kwe-myometrium ngokwayo. Kwakusungulwe ngokuqinisekileyo ukuba isantya sesidoda asidluli kwi-2-3 mm ngomzuzu.
Xa ungena kwinqanawa yomlomo wesibeleko, iiseli zesini zesini zijongene nesithintelo sokuqala kwindlela - umlomo wesibeletho. Ukuba kunzima kwaye kukho ezininzi, ukukhulelwa kungahle kwenzeke, kuba I-Spermatozoa ayikwazi ukunqoba le mqobo.
Ukudlula umbhobho womlomo wesibeleko, inambuzane isesigxini se-uterine, esivela kuyo kwi-tube fallopian, apho emva kweqanda leqanda likhona.
Ukungena njani kwesidoda kwiqanda?
Ukuhlanganiswa kwamaseli okuzala nabesetyhini kwenzeka kwi-ampullar inxalenye yesikhusela se-uterine. Phantse imizuzu engama-30-60 emva kokulala kwesidumbu se-spermatozoa kufinyelela kwisigxina se-uterine, kwaye enye i-1.5-2 iiyure iya kwindlela eya kwibhubhe. Iqanda lifihliwe yizinto ezikhethekileyo ze-enzymatic, ezibonisa indawo yazo kwaye, njengoko kunjalo, "ukutsala" i-spermatozoa.
Ukuthetha malunga nokuba ininzi yesilwanyana ihlala kwiqanda, ku funeka kuqatshelwe ukuba amaninzi i-1-2 iiyure. Emva koko, iigobolato ze-spermatozoon ngokwazo zichithwa kwaye i-nuclei ye-2 cell cells idibanisa, okubangele ukubunjwa kwe- zygote.