Cardiovascular system

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Across
  1. 5. Separates the two upper chambers.
  2. 6. veins: Carries oxygenated blood from the lungs to the heart.
  3. 8. carries oxygen-poor blood to the lungs from the heart.
  4. 11. valve: Valve that lies between the left atrium and left ventricle.
  5. 12. Upper chamber of the heart
  6. 13. valves that lies between the right atrium and right ventricle.
  7. 15. Lies between the two lower chamber.
Down
  1. 1. Lines the interior of the heart and heart valves
  2. 2. Drains blood from the upper portion of the body
  3. 3. Membranous sac surrounding the heart.
  4. 4. Small vein
  5. 7. Middle layer of the heart wall.
  6. 9. Largest artery in the body.
  7. 10. lower chamber of the heart
  8. 14. carries blood from the lower part of the body