Respiratory and Circulatory, and Sister Systems

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Across
  1. 3. large membranous tube reinforced by rings of cartilage
  2. 5. distribute oxygen-rich blood to your body
  3. 7. The activity,role, value and purpose
  4. 10. rich blood after the blood gets oxygen
  5. 11. the network of organs and tissues that help you breath
  6. 12. where the lungs exchange oxygen and carbon dioxide
  7. 14. blood vessels located throughout the body
  8. 15. contracts and flattens and the chest cavity enlarges
Down
  1. 1. made up of blood vessels
  2. 2. Blood cells protect your body from infection
  3. 4. Rate the number of times the heart beats
  4. 6. the process of gas exchange called respiration
  5. 8. transport blood, nutrients and oxygen
  6. 9. blood cells carry oxygen from the lungs to all parts of the body
  7. 10. poor blood returns from the body to the heart through the superior vena cava
  8. 13. a fist-sized organ that pumps blood throughout your body