Structural Features of the Heart

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Across
  1. 2. prevents the backflow of deoxygenated blood into the right ventricle
  2. 3. site of gas exchange; deoxygenated blood becomes oxygenated
  3. 7. innermost layer of the heart
  4. 9. top of the heart
  5. 11. divides into the right and left pulmonary arteries; carries deoxygenated blood to the lungs
  6. 12. outermost layer of the heart
  7. 14. chamber that pushes deoxygenated blood to the right ventricle
  8. 15. veins that bring deoxygenated blood to the right side of the heart
  9. 18. blood vessels that carry blood away from the heart
  10. 21. prevents the backflow of oxygenated blood into the left ventricle
  11. 23. pointed bottom of the heart
Down
  1. 1. blood vessels that carry deoxygenated blood to the lungs
  2. 4. pumps deoxygenated blood to the lungs
  3. 5. they come in direct contact with tissues for gas exchange; oxygenated blood becomes deoxygenated
  4. 6. has the thickest walls; pumps oxygenated blood to the body
  5. 8. wall that separates the ventricles
  6. 10. AV valve between the right atrium and ventricle
  7. 11. blood vessels that carry oxygenated blood to the left atrium
  8. 13. major organ in the cardiovascular system
  9. 16. largest artery in the body
  10. 17. AV valve between the left atrium and ventricle
  11. 19. layer of the heart that contracts
  12. 20. chamber that pushes oxygenated blood to the left ventricle
  13. 22. blood vessels that carry blood towards the heart