Circulatory System

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Across
  1. 3. The name for one of the two bottom chambers that pumps blood out to the lungs or body.
  2. 6. Along with oxygen, your blood carries these "food particles" to keep your cells healthy.
  3. 8. These blood vessels act like "exit ramps" because they carry blood away from the heart.
  4. 9. The largest artery in the body that carries oxygen-rich blood from the heart to the rest of the body.
  5. 10. The heart is a very special and strong type of ____ that never stops working.
  6. 12. Where the heart sends blood to get oxygen.
  7. 13. The approximate size of an individual's heart.
Down
  1. 1. The gas your body needs that is carried by your blood.
  2. 2. The tubes that carry blood back to the heart
  3. 3. Flaps that act like one-way doors to keep blood from flowing backward.
  4. 4. The four sections inside the heart.
  5. 5. Physical activity that keeps the heart muscle strong.
  6. 7. The name for one of the two top chambers of the heart that receives blood.
  7. 11. The heart's main job to keep blood moving.