Cardiovascular system Crossword

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Across
  1. 3. a tough sac like membrane that surrounds the heart to hold it in place
  2. 5. hold av valves in place while the hart is pumping blood/prevent valve cusps from inverting
  3. 7. a vessel that carries blood low in oxygen from the body back to the heart
  4. 8. phase of heart when contraction occurs and blood is pumped from the lower chambers into the arteries
  5. 9. the phase of the heart when relaxation occurs and allows the lower chambers to fill with blood
  6. 11. The biggest and longest artery in the body. It carries oxygen rich blood from the left ventricle of the heart to the body.
  7. 14. routes deoxygenated blood pumped from r. ventricle out pulmonary arteries
  8. 15. the part of aorta that extends downward from aortic arch
  9. 16. branches off of the aorta into the r. common carotid and subclavian artery
  10. 17. only veins in body that carry oxygenated blood
  11. 19. transparent layer on wall of hear/most outer layer of heart
  12. 20. the muscular wall that separates the left and right sides of the heart
  13. 21. the first part of the aorta/leads into the aortic arch
  14. 22. lower chamber
Down
  1. 1. the force of your blood pushing against the walls of arteries
  2. 2. upper chamber/receives blood from outside of the heart
  3. 4. a tubular structure carrying blood
  4. 6. only arteries in body that carry deoxygenated blood
  5. 10. series of pressure changes within the heart
  6. 12. a vessel that carries blood high in oxygen away from the heart
  7. 13. thin layer that lines the inside of the myocardium
  8. 18. the bulk of the heart and is responsible for contraction of the heart