CARDIAC MUSCLE

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Across
  1. 4. Cardiac muscle tissue is one of the three types of _______ tissue.
  2. 6. The heart acts as a pump to propel blood through the _______ vessels.
  3. 8. Cardiac muscle tissue, or myocardium, contains cells that expand and contract in __________ to electrical impulses from the nervous system.
  4. 11. This through specialized cells called _______ cells.
  5. 13. Cardiac muscle ______ striations.
  6. 14. Cardiac muscle also called heart muscle or ________.
  7. 18. The cell ______ ATP to power this contraction.
  8. 19. Cardiac muscle also one of ______ of muscle tissue.
  9. 20. Pacemaker cells control the ________ of your heart.
  10. 22. Involuntary heart ________ also a function of cardiac muscle.
  11. 25. Cardiac muscle fibers also possess many mitochondria and _______.
  12. 26. _________ of cardiac muscle is pumping blood.
  13. 27. ________ muscle is found in the heart wall.
  14. 29. It is responsible for keeping the heart pumping and blood circulating around the _______.
  15. 30. Cardiac muscle are one of _______ types of muscle tissue.
Down
  1. 1. The cell uses ATP to ______ this contraction.
  2. 2. Your nervous system sends _________ to pacemaker cells that prompt them to either speed up or slow down your heart rate.
  3. 3. Cardiac muscle fibers are ________ than skeletal muscle fibers.
  4. 5. Cardiac cells have only a _________ nucleus.
  5. 7. The heart acts as a ________ to propel blood.
  6. 9. cardiac muscle has __________.
  7. 10. Cardiac cells have only a single _________.
  8. 12. Cardiac muscle cells appear striated or striped under a __________.
  9. 13. The ______ acts as a pump to propel blood.
  10. 14. When a cardiac muscle cell contracts, the ________ filament pulls the actin filaments toward each other.
  11. 15. Cells joined end-to-end with ________ disk in between.
  12. 16. Cardiac muscle cells also contain _________.
  13. 17. Pacemaker cells are ________ to other cardiac muscle cells, allowing them to pass along signals.
  14. 21. Exercise can __________ your cardiac muscle.
  15. 23. ________in a single nucleus.
  16. 24. Its contraction is not under ________ control.
  17. 28. Also _______ as a myocardium.