Final answer:
Ejaculation is the process in which semen is forced out of the male urethra.
Step-by-step explanation:
Ejaculation is the process in which semen is propelled by muscle contractions through the urethra in the male reproductive system. Muscle contractions force the semen through the ducts and out of the body. Semen is a fluid that contains hundreds of millions of sperm and is released during orgasm.