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Ovaio normale
1) 1ml: frazione prespermatica (prev.liquido bulbouretrale + pochi spermatozoi)
2) 1ml: secreto prostatico + molti spermatozoi
3) 1ml: secreto delle vescicole seminali + pochi spermi ma > mobili e vitali




                                                                          EIACULAZIONE




                                            DOTTO
                                            EIACULATORE
64 mmMicron




Lisosoma
altamente
specializzato
STAMINALI


PRIMARI
SECONDARI
SPERMATOGONIO A
              FASE DI MOLTIPLICAZIONE

                                                                     SPERMATOGONIO B
                                  MITOSI

RISERVA CONTINUA DI STAMINALI
                                                                              PONTI

                                FASE DI ACCRESCIMENTO

               SPERMATOCITA DI I ORDINE o PRIMARIO
                                                    MEIOSI

  SPERMATOCITA DI II ORDINE O SECONDARIO


FASE DI MATURAZIONE                        SPERMATIDI


                                                 PONTI
         SPERMATOGENESI

                                                         SPERMATOZOI MATURI
SPERMATOGENESI




                   SPERMATOZOI

                    SPERMATIDI IN VARIE FASI
                    DI MATURAZIONI

                    SPERMATOCITI DI II°ORDINE
                    (SECONDARIO)

                    SPERMATOCITI DI I°ORDINE
                    (PRIMARIO)
        16gg

                        SPERMATOGONI

64gg
I Due Protagonisti




LO SPERMATOZOO        L’OOCITA
Polarization,
embryonic axis
75%   80%   90%




                  70%




                      S.I.S.ME.R.
                    UNI EN ISO 9002

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Embriologia1