HEART

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Across
  1. 1. the innermost layer of the heart that lines the heart chambers and is continuous with the endothelial lining of blood vessels.
  2. 4. in an ECG tracing, which structure signifies depolarization of the atria?
  3. 7. when a coronary blockage remains intact for a long period of time, the heart may undergo condition known as
  4. 9. the volume of blood remaining in the ventricles following contraction is called the what?
  5. 10. which valve is responsible for preventing backflow into the left atrium?
  6. 11. in the cardiac cycle, the ——- —— the final 10-30% of the blood from the atria into the ventricles to fully fill the ventricles.
Down
  1. 2. which chamber receives blood from the systemic circuit via the vina cavae?
  2. 3. the ——- is a specialized group of conducting cells in the walls of the right atrium. The structure is also called the pacemaker of the heart.
  3. 5. which chamber of the heart pumped blood into the systemic circuit?
  4. 6. the left ventricle pumps blood into which vessels?
  5. 8. which layer of the pericardium is found on the external surface of the heart?