However , spermatozoa are deposited into the female in semen , which is mostly the secretions of the seminal vesicles , prostate gland , and bulbourethral glands .
Spermatozoa are protected from the male 's immune system by the blood - testis barrier .
Spermatozoa are deposited into the female in semen , which is mostly the secretions of the seminal vesicles , prostate gland , and bulbourethral glands .
Spermatozoa are protected from the male 's immune system by the blood - testis barrier .