Across
- 1. - viruses and bacteria
- 2. - a watery liquid that food is changed into within the stomach
- 4. - liquid portion of the blood
- 6. - allow blood to clot
- 7. - type of digestion that involves breaking down food with chemicals
- 8. - largest organ of the immune system
- 9. - a blood vessel that connects arteries to veins
- 13. - a heart doctor
- 14. - a flap that automatically closes the larynx when you swallow
Down
- 1. - wavelike movement that moves food through the digestive track
- 3. - an instrument that doctors use to listen to your heartbeat
- 5. - type of digestion that involves breaking down food with movement
- 10. - a blood vessel that carries oxygenated blood away from the heart
- 11. - largest organ of the respiratory system
- 12. - a blood vessel that carries deoxygenated blood back into the heart