ejaculation		A set of coiled tubes that connects to the vas deferens
seminal vesicles		When semen spurts out of the penis
gametes		A muscular tube that passes upward alongside the testicles and transports the sperm-containing the fluid semen
duct system		Physical changes from childhood to adulthood
puberty		Sex cells
testicles		Male cell necessary to fertilize female egg cell
penis		Male reproductive glands that make sperm cells and testosterone
epididymis		Male reproductive organ made of spongy erectile tissue
scrotum		Sac of loose skin that holds the testicles
sperm		Main male hormone made by the testicles
vas deferens		When the penis becomes hard and stiff
erection		Produces some of the parts of semen, and surrounds the ejaculatory ducts at the base of the urethra
accessory glands		The epididymis and the vas deferens make this up
prostate gland		Milky white fluid that comes out during an ejaculation
testosterone		Sac-like structures attached to the vas deferens to the side of the bladder
semen		Vesicles and the prostate gland