Things in the heart

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Across
  1. 1. send natural electrical signals to make your heart beat
  2. 4. receives blood from the circulatory system
  3. 6. Carries oxygen-poor blood to the heart
  4. 8. a wall of tissue that seperates the left and right side of the heart
  5. 9. a very large vein where deoxygenated blood is sent to be brought to the heart to get oxygenated
  6. 11. collects blood then pumps it out of the heart
Down
  1. 2. Carries oxygen rich blood into the heart's muscle tissues
  2. 3. responsible for the contracting of the heart and the elasticity of the heart
  3. 5. where the "exchange" of gases and nutrients takes place
  4. 7. acts like a door in the heart,opens and closes to let blood flow from one part of the heart to another
  5. 10. Carries oxygen rich blood to the body. The largest arterie