Human Heart

12345678910111213
Across
  1. 4. Separates left and right sides of the heart
  2. 7. Chambers that pump blood to parts of the body
  3. 9. Blood rich in oxygen
  4. 11. Vessels that take blood away from the heart
  5. 12. Vessel that carries blood to all parts of the body
  6. 13. Initiates heart beat
Down
  1. 1. Ensures unidirectional flow of blood
  2. 2. Double walled membrane of the heart
  3. 3. Blood rich in carbon dioxide
  4. 5. Brings blood from the lungs to the heart
  5. 6. Brings blood to the right auricles
  6. 7. Vessels that bring blood towards the heart
  7. 8. Circulation between heart and body parts
  8. 10. Muscles of the heart