Respiratory & Circulatory System

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Across
  1. 4. a flap of tissue that covers the opening to the trachea in order to divert food & liquids.
  2. 8. The human heart consists of this many chambers?
  3. 10. The lungs take in this gas from the air we breath.
  4. 14. A.k.a. "the windpipe"
  5. 15. air passages inside the lungs that branch off like tree limbs from the bronchi.
  6. 18. blood vessels that lead away from the heart.
  7. 20. The lungs help us expel this gas from our blood stream by breathing it out.
  8. 22. The liquid that flows through our veins and arteries.
  9. 23. A pair of breathing organs located with the chest which remove carbon dioxide from and bring oxygen to the blood.
  10. 24. This muscle/organ helps pump blood and power the circulatory systems.
Down
  1. 1. tiny air sacs in the lungs from which gasses are exchanged.
  2. 2. is the main artery that carries blood away from your heart to the rest of your body.
  3. 3. blood vessels that lead back to the heart.
  4. 5. The hollow tube inside the neck that starts behind the nose and ends at the top of the trachea.
  5. 6. The ______ artery carries blood away from the heart to the lungs to get oxygenated.
  6. 7. The large air passages that lead from the trachea to the lungs.
  7. 9. The ______ atrium is the first chamber of the heart that un-oxygenated blood enters.
  8. 11. The lower 2 chambers of the heart are known as the left & right ___________?
  9. 12. The "Voice Box" is triangularly shaped thing just below the Pharynx.
  10. 13. ______ blood cells carry the oxygen throughout the circulatory system
  11. 16. The heart is made up of this type of muscle?
  12. 17. The upper 2 chambers of the heart are known as the left & right __________?
  13. 19. This Muscle powers the Respiratory System located near the bottom of the rib cage.
  14. 21. Humans breath in oxygen either through our mouth or through our _____.