Chapter 2 Terms

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Across
  1. 2. AV ______: part of the cardiac conduction system that extends from the AV node to the bundle branches, another word for the AV junction.
  2. 4. Lower chambers of the heart.
  3. 6. Causes contraction in the heart.
  4. 11. pulmonary ______: carry deoxygenated blood out of the right ventricle and into the lungs.
  5. 12. Upper chambers of the heart.
  6. 14. Flat lines between complexes, such as the PR and ST.
  7. 19. ______ leads: the 6 standard chest leads in EKG.
  8. 21. ______ valve: valve between the right atrium and the right ventricle.
  9. 23. ______ vena cava: the vein that returns blood from body areas below the diaphragm.
  10. 24. Shown by a square-shaped arch that is 10 mm high, to show you that the EKG machine is calibrated correctly.
  11. 26. outer layer of the heart.
  12. 28. ______ valve: valve positioned between the right ventricle and the pulmonary artery.
  13. 29. period of time when the heart muscle is contracting.
  14. 32. recharging of a heart cell back to a resting state.
  15. 34. Distance between certain parts of the heartbeat on the EKG, most common ones are PR, R-R, QRS, and QT.
Down
  1. 1. ______ vena cava: vein that brings blood to the heart from the upper body.
  2. 3. Divides the right and left chambers of the heart.
  3. 5. pulmonary ______: flow of blood from the heart to the lungs and back to the heart.
  4. 7. ______ leads: aVF, aVR, aVL, unipolar leads on right and left arm and left foot.
  5. 8. ______ branches: located in the interventricular septum, receives impulses from the AV Junction.
  6. 9. period of time when the heart muscle is relaxed and the chambers fill with blood.
  7. 10. The top of the heart.
  8. 13. a device for conducting electricity, put onto the patients skin and then attached to lead wires.
  9. 14. ______ leads: Leads I, II and III.
  10. 15. ______ fibers: specialized conductive fibers located within the walls of the ventricles.
  11. 16. Bundle of ______: Part of the AV junction that sends electricity from the atria to the ventricles.
  12. 17. inner lining of the heart.
  13. 18. pulmonary ______: carry the oxygenated blood from the lungs into the left atrium of the heart.
  14. 19. a double layer of membranes surrounding the heart.
  15. 20. ______ valve: heart valve between the left ventricle and the aorta.
  16. 22. The SA node is the natural ______ of the heart. First point of electrical stimulation in the heart.
  17. 25. Bottom left point of the heart.
  18. 27. ______ valve: valve between the left atrium and the left ventricle; bicuspid valve.
  19. 30. interference in the EKG machine from electronics, patient movement, or loose electrodes.
  20. 31. Largest artery in the body.
  21. 33. an angle or view of the heart that is recorded in an electrocardiogram.