Semen (human)
Human semen is the "seed" of mankind, the mix of body fluids amd male gametes (spermatazoons), that, when deposited in the female reproductive tract by ejaculation, can result in fertilization.
WHO characteristics of normal semen
sperm concentration, percentage motility, and morphology
Fertility in men
Male fertility is intimately related to the quality and quantity of sperm cells in semen. Presently, when men are evaluated for infertility semen samples are routinely collected and examined.
Infertility in men
At a minimum, a failure to establish a pregnancy within 1 year of unprotected intercourse is required before a man is considered a candidate to be evaluated for infertility.
Varicocele
Varicocele is a condition of an enlarged and excessively twisting course of the veins within the spermatic cord (pampiniform plexus). Although some men with this condition are fertile, varicocele is a cause of infertility in many men.
- seminal oxidative stress levels (ROS-TAC score)