Penis: Male reproductive organ that transfers sperm to
the female.
Erection: When the penis becomes engorged with
blood causing it to become stiff and hard.
This must happen before a male can
ejaculate.
Ejaculation: The ejection of semen through the penis
during sexual activity.
Epididymis: A set of coiled tubes that lie alongside and
connect the testes with the vas deferens.
Sperm mature and are stored here.
Prostate gland: Structure surrounding the ejaculatory
ducts that produces some of the
components of semen. Common place for
cancer.
Scrotum: Pouch-like structure containing the testes.
Seminal vesicles: Sac-like structures attached to the
vas deferens that provides sugary fluids to
lubricate the duct system and nourish the
sperm in semen.
Sperm: Male sex cells.
Testicle: Structure in males in which sperm are
produced (plural: testes).
Testosterone: Major male sex hormone.
Urethra: Organ that carries sperm through the penis
and conveys urine from the bladder.
Vas deferens: Muscular tube that passes upward
alongside the testes and transports the
sperm.
Cowper’s gland: Two small glands that produce a clear,
sticky fluid added to semen to allow it
to thicken in the female.
Nocturnal Emissions- An uncontrolled ejaculation
during sleep.
Semen is made up of four parts
1. Fluid from seminal vesicles
2. Fluid from the prostate
3. Fluid from the cowpers gland
4. Sperm
Sperm facts:
 About 200 million or more sperm are produced a day!
 Sperm can live for 3-5 days in the uterus and fallopian tubes.
 Sperm usually reach the fallopian tubes about an hour after
ejaculation.
 Sperm make up only about 2% of an ejaculation.
 400 million sperm can fit on the head of a pin!!!!