Muscle Crossword Puzzle Review

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Across
  1. 1. the "peacemaker" cells of our heart; specialized grouping of cells in our heart
  2. 2. causes cholinesterase to not break down the acetylcholine in the synapse; this results in a person's muscles contracting and not relaxing
  3. 5. thick filaments
  4. 7. ___ muscle - Multinucleated
  5. 11. ___ muscle - Non-Striated, involuntary, single nucleus, long weak contractions
  6. 12. excessive stretching and possible tearing of the muscle or tendon
  7. 13. ___ muscle - Striated, involuntary, single nucleus
  8. 16. Membrane that each muscle cell/fiber is surrounded by
  9. 17. ___ tissue - able to shorten and pull on its attachment points; causes movement
  10. 18. another name for the plasma membrane of muscle cells
  11. 19. membrane that each muscle is surrounded by
Down
  1. 1. ___ junction - where a nerve and muscle fiber/cell come together
  2. 3. attach muscle to bone
  3. 4. gap between the neuron and motor end plate
  4. 6. enzyme that breaks down ACH
  5. 8. muscle disorders arise from abnormalities that affect the muscle's structure or metabolism; some are inherited while others are acquired
  6. 9. thin filaments
  7. 10. ___ tissue - a collection of cells that are excitable
  8. 14. fibers organized into bundles inside the skeletal muscle
  9. 15. membrane that fascicles are surrounded by