Heart

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Across
  1. 2. points inferiorly; 5th intercostal space
  2. 3. main organ of the cv system
  3. 6. middle layer aka cardiac musc
  4. 8. fibrous pericardium
  5. 10. outer layer aka visceral pericardium
  6. 11. muscular ridges; inner wall of heart (esp. ventricles)
  7. 14. middle layer; tough, dense
  8. 18. carries CO2 blood; "Pulmonary" Heart to lungs
  9. 20. towards the heart; carry CO2 blood
  10. 21. entrance room of the heart; generates 5mm Hg
  11. 22. heart chambers relaxing
Down
  1. 1. inner layer aka elastic collagen
  2. 2. partial blockage of coronary artery
  3. 3. due to incomplete valve closure so blood goes into the wrong area
  4. 4. inferior to atria; larger than atria; thicker walls
  5. 5. space containing heart
  6. 7. expanded areas above aortic valve; lead into right and left
  7. 9. space between middle and inner; filled with fluid called serous fluid; friction between layers
  8. 12. triple layered membrane that surrounds the heart
  9. 13. inner layer; on surface of heart
  10. 14. not enough fluid; inflammation of peric layers
  11. 15. away from heart; carry O2 blood
  12. 16. strands of tissue
  13. 17. carries O2 blood; "systemic"heart to body system
  14. 19. superior; 2nd costal space
  15. 23. heart chambers contracting