Puzzles assignment part 1

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Across
  1. 1. layer of the heart.
  2. 5. lining of blood vessels.
  3. 7. of the heart.
  4. 10. lining of the heart.
  5. 11. carrying oxygen poor blood from the heart to the lungs.
  6. 12. type of the blood vessel.
  7. 13. of two upper chambers of the heart.
  8. 14. artery.
  9. 15. that is oxygen poor.
Down
  1. 2. between the right atrium and the right ventricle.
  2. 3. to measure blood pressure.
  3. 4. phase of the heartbeat.
  4. 6. like membrane surrounding the heart.
  5. 8. phase of the heart.
  6. 9. artery in the body.