Posts Tagged ‘spermatozoi’

Come avviene il concepimento.

23 novembre 2009 di francescabeltratti in concepimento

Durante il rapporto sessuale, nel momento dell’eiaculazione, gli spermatozoi (in numero variabile tra i 150.000 ed i 400.000) vengono spinti nella vagina. Lo sperma viene emesso in tre frazioni: la prima è piuttosto povera di spermatozoi, la seconda ne è più ricca ma solo la terza ed ultima, che racchiude all’incirca il 20-30% degli spermatozoi [...]

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