crossword

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Across
  1. 1. largest artery in the heart
  2. 3. helps to clot blood
  3. 6. a large vein
  4. 8. 5 types and Larger than erythrocytes
  5. 9. middle muscular layer of the heart wall
  6. 13. carrys blood from heart back to the lungs
  7. 14. the two lower chambers of the heart
  8. 15. bringing blood from the heart to the body
Down
  1. 2. the two upper chambers of the heart
  2. 4. smooth membrane that encloses the inside of the heart
  3. 5. bringing blood from the body to the heart
  4. 7. disk shaped transporter
  5. 10. membrane enclosing the heart
  6. 11. carrys blood from lungs back to the heart
  7. 12. fine branching blood vessels