Circulatory and Respiratory Systems

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Across
  1. 6. When the heart ____________ , blood exits the heart.
  2. 9. The gas waste product that is exhaled during respiration.
  3. 12. ___________ blood cells destroy harmful bacteria, viruses, and foreign bodies that cause illness.
  4. 15. Blood vessels that carry oxygen rich blood away from the heart.
  5. 17. The branching tubes inside the lungs that lead to the alveoli.
  6. 19. Cells in the blood that produce a chemical that helps your blood clot to stop active bleeding.
  7. 22. The organ that connects the nose and the mouth.
  8. 23. The blood type that you would find B proteins on the surface of the red blood cells.
Down
  1. 1. The blood type that can only receive from a donor with AB blood.
  2. 2. When the heart ____________ , blood enters the heart.
  3. 3. The tubes, or airways that distribute air from the trachea into the lungs.
  4. 4. Blood vessels that connect other blood vessels together.
  5. 5. The organ the warms, humidifies, and filters air as it enters the body.
  6. 7. ___________ blood cells carry gases like oxygen and carbon dioxide.
  7. 8. The gas waste product that is inhaled during respiration.
  8. 10. The fluid part of blood that contains water, nutrients, and carbon dioxide.
  9. 11. The organ that houses the vocal courds and produces sound.
  10. 13. Blood vessels that carry oxygen poor blood back to the heart.
  11. 14. The muscle under the lungs that contracts and relaxes and you inhale and exhale.
  12. 16. The blood type that is considered to be the universal donor.
  13. 18. The blood type that can be donated to people with type A or type AB blood.
  14. 20. The structures inside the lungs where oxygen is diffused into the bloodstream via capillaries.
  15. 21. The stiff, hollow tube that acts as the main air airway, connecting to the bronchi.