Anatomy of the heart

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Across
  1. 1. Hollow spaces within the heart
  2. 4. Name for two very large veins
  3. 5. Vessel that transports oxygenated blood away from the heart
  4. 6. Fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products
  5. 7. Chamber located at the top of the heart that receives blood
  6. 10. Chamber located at the bottom of the heart that pumps blood out of the heart
  7. 14. The innermost layer of the heart’s wall
Down
  1. 2. The outer layer of the heart’s wall
  2. 3. The smallest type of blood vessel
  3. 8. The middle layer of the heart’s wall
  4. 9. Tissue that separates the left and right sides of the heart
  5. 11. Vessel that transports deoxygenated blood towards the heart
  6. 12. Main artery of the body
  7. 13. Prevent the backward flow of blood