systems
Across
- 2. oxygen-poor blood
- 4. 4
- 6. collecting and processing info
- 8. moves blood around the body
- 10. largest artery
Down
- 1. transports oxygen
- 3. a passage for food and air
- 5. where gas exchanges occur in the respiratory system
- 7. protection, support
- 9. carries oxygen-rich blood away