Semen
Sperms, secretions of the seminal vesicles, prostate, Cowper„s and urethral glands normospermia - 100 x 106 sperms/ml
oligospermia - 50 % males 20-40 x 106 sperms/ml a 100 % _ 20x 106 (sterility)
azoospermia - 0 live sperms (sterility)
volume 2-6 ml, speed 3 mm/min, reach uterine tubes 30-60 min. after copulation
prostaglandins - unknown function