Across
- 9. system that brings oxygen into the body and removes carbon dioxide.
- 11. The lower section of the heart.
- 12. little filter in the kidney.
- 14. system that helps get rid of cellular waste.
- 15. Finger shaped structures.
Down
- 1. A blood cell that fights disease
- 2. Tiny sacs used for the movement of gases between air and blood.
- 3. The liquid part of your blood.
- 4. A group of cells that work together.
- 5. The upper section of the heart.
- 6. vessel that carried blood away from the heart.
- 7. A group of tissues that all work together
- 8. A vessel that carries blood back to the heart.
- 10. An organ that exchanges oxygen and carbon dioxide with your blood.
- 13. A group of organs working together to perform a specific function.