How does the system work

The ability to reproduce begins in puberty (the development of sperm and egg)

The male reproductive tract consists of paired testes which produce sperm and testosterone

Spermatogenesis and testosterone production (starts at puberty ends at death) are stimulated by FSH and LH

The female reproductive tract consisted of paired ovaries which produce eggs as well as estrogen and progesterone

The monthly menstrual cycle controls the reproductive cycle

The cycle is controlled by hormones, hypothalamus, anterior pituitary glands, and ovaries

In order to reproduce the male must ejaculate semen into the females vagina

The sperm from the semen must swim through the vagina and uterus into the uterine tube where fertilization usually takes place

Only one sperm will enter the egg and fertilize it