Muscular System Test Review Colton Tice

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Across
  1. 5. single muscle cell
  2. 8. pacemaker cells
  3. 9. where a nerve and muscle fiber come together
  4. 10. also known as the heart muscle
  5. 11. connect cells and allow them to contract
  6. 13. fibers are organized into bundles called a
  7. 14. gap between the neuron and motor end plate
  8. 15. part of the fiber that contains actin and myosin
  9. 20. heart muscle cells
  10. 21. thick/dark filament
  11. 23. a muscle that is not under conscious control
  12. 24. A muscle under conscious control
Down
  1. 1. enzyme that breaks down ACH
  2. 2. an example of a voluntary muscle
  3. 3. another name for skeletal muscle
  4. 4. found in the walls of hollow organs
  5. 6. where neurotransmitters are stored
  6. 7. the plasma membrane of muscle cells
  7. 12. a collection of collagen fibers attached to a bone
  8. 16. each muscle is surrounded by a membrane called the
  9. 17. where thick and thin filaments overlap
  10. 18. these cells contain mitochondria
  11. 19. thin/light filament
  12. 22. boundary between the sarcomeres
  13. 25. energy source of muscle contractions