Circulatory and Respiratory Crossword

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Across
  1. 4. carries air, food, and fluids after entering the nasal cavity
  2. 8. part of the heart that carries blood to the rest of the body
  3. 10. part of blood that fights infections
  4. 12. carries blood away from the heart
  5. 13. part of blood that carries oxygen
  6. 14. carries blood back to the heart
  7. 15. distributes air throughout the lungs untl the bronchioles
Down
  1. 1. also known as the voice box
  2. 2. valve between the right ventricle and pulmonary arteries
  3. 3. carries air until it reaches the alveoli
  4. 5. also known as the windpipe
  5. 6. part of blood that clots
  6. 7. beginning of the respiratory system
  7. 9. tiny air sacs in the lungs
  8. 11. connects arteries and veins