Across
- 1. Dioxide A gas we breathe out.
- 3. The foods and drinks we consume regularly.
- 8. One of the two top chambers in the heart.
- 11. An activity that keeps our body fit and heart strong.
- 13. Vessel Tiny tubes that transport blood throughout our body.
- 14. The rhythmic thumping sound you can hear from your chest.
- 15. The process of breathing in and out.
- 16. Tiny building blocks that make up our bodies.
- 18. A gas we breathe in that our cells need to live.
- 19. One of the two lower chambers of the heart.
- 20. The yellowish liquid part of our blood.
Down
- 1. System The body's 'highway' for blood, delivering nutrients and oxygen to cells.
- 2. Blood These cells carry oxygen all around our body and give our blood its color.
- 4. System The group of organs that help us inhale and exhale air.
- 5. The beat you can feel on your wrist or neck, showing how fast your heart is beating.
- 6. What we do to get oxygen in and carbon dioxide out.
- 7. The main and largest artery in the human body, originating from the left ventricle.
- 9. The organ that pumps blood throughout our body.
- 10. The red fluid that flows through our veins and arteries.
- 12. Blood Cells Part of our blood that helps fight infections.
- 16. The movement of blood through our body.
- 17. How well your body is functioning and free from illness.