| A | B |
| Testosterone (p. 436) | Male sex horomone |
| Sperm (p. 436) | Male reproductive cell |
| Testes (p. 437) | Two small glands that produce sperm |
| Scrotum (p. 437) | The sac that holds the testes |
| Penis (p. 437) | A tube-shaped organ attached to the trunk of the body just above the testes |
| Semen (p. 438) | A thick fluid containing sperm and other secretions from the male reproductive organs |
| Fertilization (p. 438) | The union of a reproductive cell from a male and one from a female |
| Circumcision (p. 438) | Surgical removal of the foreskin of the penis |
| Epididymis (p. 438) | Located on the outer surface of the testes, it is the temporary storage facility for sperm to mature |