Cardiovascular & Respiratory Systems

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Across
  1. 1. The heart is made up of _________ muscle.
  2. 6. This is another name for the cardiovascular system.
  3. 7. There are 4 of these sections in your heart.
  4. 9. The gas that your blood picks up when it is sent to your lungs.
  5. 11. This flap covers up the "tube" not being used when you are either eating or breathing.
  6. 13. The blood vessel that carries blood AWAY from your heart to the rest of your body.
Down
  1. 2. The upper chamber of your heart is called a(n) __________.
  2. 3. The lower chamber of your heart is called a(n) __________.
  3. 4. The scientific name for your voice box.
  4. 5. This tube is made of cartilage and carries air to and from your lungs.
  5. 8. The tiny air sacs at the ends of your airways.
  6. 10. The muscle below your lungs that helps your lungs to fill up with and release air.
  7. 12. The blood vessel that carries blood TO your heart.