Across
- 4. A muscular tube that connects the mouth to the stomach
- 6. Blood cells that carry oxygen from the lungs to the body cells.
- 9. the system that pumps blood around the body
- 10. Found in the kidney, little filter that blood goes through
- 11. liquid part of the blood
- 13. tiny sacs of lung tissue specialized for the movement of gases between air and blood
- 14. group of organs that work together to perform a specific function
Down
- 1. Airways in the lungs that lead from the bronchi to the alveoli
- 2. cells that fight a sickness
- 3. helps make scabs
- 4. The system that pumps out cell waste
- 5. building block of life
- 7. small blood vessel that connects veins and arteries
- 8. upper chamber of the heart
- 12. The passages that direct air into the lungs