semen

Semen is a fluid produced by the male reproductive system that contains sperm cells, which are necessary for reproduction. It is made in the testicles, mixed with fluids from the prostate and other glands, and stored in the semen or ejaculatory ducts. During sexual activity, semen is expelled from the body through ejaculation. Its primary role is to deliver sperm to a female's reproductive tract, where fertilization of an egg can potentially occur. Semen's volume, composition, and sperm count can vary between individuals and impact fertility.