Across
- 2. / This system fights off viruses and bacteria.
- 3. / Important for a healthy gut.
- 5. / Largest organ in the human body.
- 7. / Your stomach has these to tell the brain it is full.
- 9. / Takes blood away from your heart.
- 11. / Healthy lungs are this color.
- 13. / When you ______ your lungs release carbon dioxide.
- 14. / Carries blood to your heart.
Down
- 1. / This organ beats about 100,000 times a day.
- 4. / The adult human body has 206 of these.
- 6. / Largest bone in the human body.
- 8. / The body's computer.
- 10. / When you ______ your lungs oxygenate your blood.
- 12. / Your body is made up of these.