Cardiovascular System Vocab

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Across
  1. 7. A test to record the electrical signals in the heart.
  2. 8. Fluid like membrane that surrounds the heart.
  3. 9. Relating to the lungs.
  4. 10. The slower the heart rate, the greater the cardiac output/more blood pumped.
  5. 11. Increase in the diameter of a blood vessel.
  6. 13. A measure of a fluid's resistance to flow.
  7. 17. Conducts the normal electrical impulse from the atria to the ventricles.
  8. 20. Vessel that transports blood from the heart.
  9. 21. The amount of blood ejected from the ventricle with each cardiac cycle.
  10. 22. A hollow part or cavity in an organ (pumps blood out)
  11. 23. The innermost layer of tissue that lines the chambers of the heart.
  12. 24. Vessel that transports blood from capillaries to a vein.
  13. 25. Phase of the heartbeat when the heart muscles contract pumping blood out.
Down
  1. 1. The middle muscular layer of the heart.
  2. 2. Irregular heartbeat/contraction of muscle fibers.
  3. 3. A chamber of the heart (receives blood).
  4. 4. One of the two large veins that carries deoxygenated blood to the heart.
  5. 5. The outermost protective layer of the heart.
  6. 6. A drug free method to quickly return an abnormal heart rhythm to normal.
  7. 10. Generates an electrical signal that causes the upper heart chambers to contract.
  8. 11. Decrease in the diameter of a blood vessel.
  9. 12. The largest artery in the body (left ventricle to the body).
  10. 14. Phase of the heartbeat where the muscles relax filling the chambers up with blood.
  11. 15. A wall separating the left and right sides of the heart.
  12. 16. Branches of specialized nerve cells that quickly send signals to the ventricles.
  13. 18. Small branch of an artery that communicates with a capillary network.
  14. 19. A blood vessel that carries blood to the heart.
  15. 24. Doors in the heart that open and shut controlling blood flow.