Respiratory & Circulatory System

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