Across
- 1. Basic unit of structure and life
- 4. Lower chamber in your heart
- 7. Where digestion begins
- 9. Blood vessel that carries blood back to the heart
- 11. Muscular tube that connects the mouth to the stomach
- 12. Example: lung, heart, kidney, stomach
- 13. Hint: tiny finger like things
Down
- 1. Hint: smallest blood vessel
- 2. organ that exchanges oxygen and carbon dioxide with your blood
- 3. Liquid part of blood
- 5. A little filter at the bottom of your kidney
- 6. Group of similar cells that perform the same function
- 8. Hint: forms scabs
- 9. Upper chamber in your heart
- 10. Hint: windpipe