CV System Crossword Puzzle

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Across
  1. 3. When the heart rate is random with no beat.
  2. 6. The purkinje fibers branch into two directions from this tightly packed set of nerves.
  3. 7. A relaxation that allows blood to flow into a chamber.
  4. 9. When the heart rate is too slow.
  5. 11. This wall within the heart divides the lower two chambers.
  6. 13. This angular piece of the heart points toward the left hip.
  7. 14. These nervous fibers branch from the apex upward through the walls of the ventricles.
Down
  1. 1. A vessel which delivers oxygenated blood around the body.
  2. 2. Nature's pacemaker
  3. 4. A contraction of either chamber of the heart.
  4. 5. Tiny tendons that prevent the prolapse of the AV valves.
  5. 8. When the heart rate is too fast.
  6. 10. A thick, muscular vessel that pushes blood from the heart to the rest of the body.
  7. 12. A flimsy vessel that delivers deoxygenated blood to the heart.