Sperm

matures. It undergoes a complex process. It takes about 3 months

or so

. The main

process

occurs in the

testicles

within the seminiferous tubules

The spermatozoa then travel along the tubules into the

epididididymis

. It remains in the head of the epididymis for about 2-3 weeks. It is only then that the sperm develops into a mature sperm that is ultimately capable of movement and fertilization. So it takes about 90 days for a

spermatogonial cell

to develop into a mature sperm.

The main methods of expulsion from the body

are spermatozoa and ejaculation.