Card205 Chapter 1

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Across
  1. 5. The innermost layer of the heart
  2. 6. The muscles on the ventricular wall that help anchor the AV valves
  3. 8. The phase in which the ventricles contract and expel their blood
  4. 9. The bottom chambers of the heart
  5. 11. This nervous system causes the fight-or-flight response
  6. 13. These structures widen into veins
  7. 14. Mechanical events that occur in order to pump blood throughout the body
  8. 16. The valve between the right atrium and ventricle
  9. 18. The name for the top chamber of the heart on the right or left side
  10. 19. Stimulation of this causes the heart rate and blood pressure to decrease
Down
  1. 1. During this phase the ventricles relax and fill with blood
  2. 2. The contraction of the atria which squeezes the last of the blood into the ventricles
  3. 3. These cells cause the heart to contract
  4. 4. Blood enters this vessel after being propelled out of the left ventricle
  5. 7. These signals come from conduction system cells
  6. 10. The structure dividing the right and left side of the heart
  7. 12. A vena cava that carries blood back to the heart from the body
  8. 15. A branch of the left coronary artery that feeds the lateral wall on the left side of the heart
  9. 17. Veins that carry blood from the lungs to left atrium
  10. 18. The abbreviation for the nervous system which influences the heart