| Term | Definition |
| scrotum | bag-like sac that surrounds the testes, hangs outside the male's body to control the temperature |
| seminiferous tubules | located in the testes, produce sperm cells and make testosterone |
| sperm | small reproductive cell produced in large quantities by males, very mobile |
| epididymis | sperm storage area |
| vas deferens | connected to the testes, travels through 2 glands that nourish the sperm and provide protection |
| semen | fluids that surround sperm |
| penis | the male organ that transfers sperm to the females body, contains erectile tissue that is able to fill with blood |
| prostate gland | produces fluid to help make vaginal tract less acidic, this prolongs the life of the sperm |
| cowper's gland | produces fluid to help lubricate the urethra for sperm to pass through |
| seminal vesicles | produces fructose to provide energy for sperm as the travel through the female reproductive system |
| testes | part of the male reproductive system that produces sperm and testosterone |
| pituitary gland | the master glad of the endocrine system that signals the ovaries or testes to initiate puberty |
| ejaculation | when semen leaves the body |
| XY | male genotype (chromosome set) |
| XX | female genotype (chromosome set) |
| STD | sexually transmitted disease |
| Urethra | Sperm and urine exit the body through this |