The Heart

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Across
  1. 2. Clinical procedure for mapping the electrical activity of the heart
  2. 6. Arterial blood moves ____ from the heart
  3. 9. Tough tendons that control the opening and closing of valves
  4. 12. The period during which the atria are contracting (depolarizing) on an EKG
  5. 13. The period during which the ventricles are repolarizing
  6. 14. The blood is pumped out of the heart to the pulmonary artery through the ______ valve
  7. 18. From the right atrium blood travels through the tricuspid valve to the ____ _______
  8. 20. Membrane that lines the heart chambers and continues throughout the blood vessels
  9. 21. Oxygenated blood re-enters the heart through the ____ ____ into the left atrium
Down
  1. 1. The period during which the ventricles are depolarizing, which precedes their contraction
  2. 3. The apex of the heart rests on the _______, and its base is at the level of the second rib
  3. 4. Veins pump deoxygenated blood from the body into the ____ _____ where it enters the right atrium
  4. 5. The ____ is approximately the size of a human fist and weighs about one pound
  5. 6. The ____ are the receiving chambers of the heart
  6. 7. Blood travels to the left ventricle from the left atrium through the _____ valve
  7. 8. Another name for the SA node is the _______
  8. 10. Serous membrane that is the outermost layer of the heart
  9. 11. The _______ are the discharging chambers of the heart
  10. 15. The heart muscle, or ______ is composed of cardiac muscle
  11. 16. Blood travels through the right and left pulmonary arteries to the capillary beds of the _____
  12. 17. Blood pumps out of the heart through the aortic valve into the _____
  13. 19. Venous blood moves _____ the heart