Look At Those Muscles!

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Across
  1. 3. Plasma membrane.
  2. 6. Yields 1 ATP.
  3. 7. Period in which begins with action potential and ends with myosin binds to actin.
  4. 12. Regulatory protein that permits cross-bridge cycle formation.
  5. 13. Marathon runner may have high levels of this in skeletal muscles.
  6. 14. Drug X can prolong action potentials by inhibiting ________.
  7. 15. tetani Lockjaw
  8. 16. Process by which acetylcholine is released from motor neuron end plate.
Down
  1. 1. Activated to release calcium ions within the skeletal muscle fiber.
  2. 2. Actin pulled toward the center of sarcomere.
  3. 4. Does not change length regardless of contracted/relaxed state of sarcomere.
  4. 5. As action potential propagates down the motor neuron, it will cause the opening of _________.
  5. 8. Found on the postsynaptic skeletal muscle cell which also functions as ligand gated sodium channel.
  6. 9. Reduction in number of myofibrils.
  7. 10. Pushing against a wall with hands.
  8. 11. Thick filament.