Parts of the heart.

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Across
  1. 1. ensures that the flow of blood is in one direction
  2. 4. responsible for the contractility of the heart
  3. 5. separates the left and right sides of the heart.
  4. 6. carries oxygen-rich blood from the heart to the rest of the body
  5. 7. transports blood back to the heart
  6. 8. transports blood away from the heart
  7. 9. bloodvesselss that distribute oxygen and nutrients throughout the body.
Down
  1. 1. returns deoxygenated blood back to the heart
  2. 2. generates the electrical impulse that initiates the heartbeat.
  3. 3. lower chambers where blood circulates before pumping it to the other parts of the body
  4. 8. upper chambers where blood enters the heart