Across
- 3. Liquid released by glands in the mouth.
- 5. Blood vessels that carry deoxygenated blood.
- 8. Longest bone in the human body.
- 9. Group of tissues that work together.
- 10. Basic living units of the body.
Down
- 1. Smallest blood vessels.
- 2. The voice box
- 4. Body's largest gland.
- 6. Where the brain is located.
- 7. Hard substance found in hair and nails.