(sē′mĕn)
pl. semina [L. semen, seed, semen]
A thick, opalescent, viscid secretion discharged from the urethra of the male at the climax of sexual excitement (orgasm). Semen is the mixed product of various glands (prostate and bulbourethral) plus the spermatozoa, which, having been produced in the testicles, are stored in the seminal vesicles.
Normal values for the seminal fluid ejaculate are as follows: volume, 2 to 5 ml; pH, 7.8 to 8.0; leukocytes, absent or only an occasional one seen per high-power field; sperm count, 60 to 150 million/ml; motility, 80% or more should be motile; morphology, 80% to 90% should be normal.

SYN: SEE: seminal fluid; SEE: seminal plasma