Across
- 4. line leading to a point
- 7. movement to
- 8. first Number
- 9. air going in
- 12. air going out
- 13. inside the body
Down
- 1. blood vessel
- 2. air goes through it and out
- 3. inside the body
- 5. organ in the body
- 6. color red flowing
- 10. what every human has
- 11. living being