Across
- 4. Vessel that carries blood away from the heart
- 7. voice box for birds
- 9. mostly found in joints and give flexibility
- 10. 1st chamber of the heart
Down
- 1. smaller stems of bronchi
- 2. Connections of bone in the animal's body
- 3. Vessel that carries deoxygenated blood toward the heart
- 5. filters toxins from blood
- 6. control center of the nervous system
- 8. 2 main branches from trachea