|Healthy Women, Healthy Mothers - An Information Guide - Second Edition (FCI, 1995, 241 p.)|
|Chapter Three - THE REPRODUCTIVE PARTS OF THE FEMALE AND MALE BODIES|
The man plays a brief but vitally important role in reproduction. He produces the sperm which fertilises the egg to begin a new life. After fertilisation, the man's biological role in pregnancy is over, although his responsibility toward the woman and child continue. As described below, a man's major reproductive organs lie outside his body.
THE TESTES (TESTICLES)
The two testes produce the sperm which fertilise the woman's egg to start the process of reproduction. They are two egg-shaped organs, in front of and between the thighs, within a sac of skin known as the scrotum (see Figure 3.4). From puberty until old age, men's testes produce sperm all the time. While a woman releases one egg every month, a man releases 100-300 million sperm every time he ejaculates, or reaches climax, during sexual intercourse. During ejaculation, the sperm are carried in a liquid called semen that is produced by the man's reproductive organs. The semen passes through a tube called the vas deferens and out of the penis. One of the millions of sperm may reach an egg and fertilise it; the rest simply die in a few days and disappear.
The penis is the organ that carries the semen with the sperm into the vagina. During sexual excitement, blood is pumped into the muscles of the penis. This makes the penis stiffen or become erect so it can enter the vagina. Although both semen and urine pass through the tube called the urethra in the penis, at the time of ejaculation the opening from the bladder is closed so that only semen comes out of the penis. After ejaculation, the blood quickly drains away into the body and the penis returns to its normal state.
Figure 3.4: Reproductive Organs of the Male
Summary: The Reproductive Parts of the Female and Male Bodies
The female and male bodies play different but complementary roles in creating a baby.
THE FEMALE BODY:
THE OVARIES produce the eggs which are fertilised by the man; fertilised eggs grow to become babies. The ovaries also produce hormones that influence the development of the female body.
THE MALE BODY:
THE TESTES are two egg-shaped organs in front of and between the thighs, inside a sac of skin called the scrotum. The testes produce the sperm which fertilise the woman's egg to begin reproduction.
THE PENIS is the organ that places the sperm in the woman's vagina. The sperm are carried in a liquid called semen produced in the man's body.