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