Human Circulatory and Respiratory System

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