Unit 4 - Concept 2 - Cardiovascular System

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Across
  1. 2. responsible for the heart's pumping
  2. 7. noncontractile cells that can spontaneously depolarize
  3. 9. pumps O2-poor blood to the lungs
  4. 10. sound made when the AV valves close
  5. 12. what is heard through a stethoscope
  6. 14. prevent backflow into the ventricles
  7. 17. number of chambers in the heart
  8. 18. when the heart contracts
  9. 21. mini-arteries that branch out of arteries into capillaries
  10. 23. SL valve with 3 cusps that guards the base of the aorta
  11. 25. the node that receives and distributes the AP from the SA node down to the ventricles
  12. 27. AV valve with 3 cusps between right atrium and right ventricle
  13. 28. transfer blood between veins and arteries
  14. 30. prevent backflow into the atria when the ventricles contract
  15. 32. arteries, capillaries and veins
Down
  1. 1. SL valve with 3 cusps that guards the base of the pulmonary trunk
  2. 3. pumps O2-rich blood to the body
  3. 4. receives O2-rich blood from the lungs
  4. 5. blood rushes out of ventricles and into aorta and pulmonary trunk
  5. 6. what the heart pumps
  6. 8. smallest vein components that pull blood out of capillaries
  7. 9. receives O2-poor blood from the body
  8. 11. carry blood towards the heart
  9. 13. carry blood away from the heart
  10. 15. main trunk of the heart
  11. 16. the receiving chambers of the heart
  12. 19. AV valve with 2 cusps between left atrium and left ventricle
  13. 20. type of muscle tissue found in the heart
  14. 22. the node that initiate the action potential that will cause the heart to beat
  15. 24. when the heart relaxes
  16. 26. ventricles relax, pressure drops, SL valves close
  17. 29. made when the SL valves close
  18. 31. the discharging chambers of the heart