Muscle physiology terminology

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Across
  1. 3. Region of sarcomere composed of thick filaments
  2. 5. Part of thick filaments responsible for producing motion that causes muscle contraction
  3. 6. Mechanism that drives muscle contraction (2 words)
  4. 7. unit A motor neuron and all of the fibres it innervates (2 words)
  5. 9. Found in thick filaments in muscle fibres
  6. 14. Type of muscle cells that are used in endurance exercise (2 words)
  7. 15. Twitch during which a muscle shortens and lifts a constant load
  8. 16. Type of filaments composed of actin
  9. 18. Region of sarcomere with no overlapping filaments
  10. 20. Structure that transmits action potentials from the sarcolemma into the cell's interior (2 words)
  11. 23. Shortening muscle contraction
  12. 24. Plasma membrane of muscle fibres
  13. 26. reticulum Organelle in muscle fibres that stores calcium (2 words)
  14. 29. Type of muscle fibre with high myosin ATPase activity (2 words)
  15. 30. Type of filaments composed of myosin
  16. 31. Muscle contraction with no change in length
  17. 32. Mechanical response of a muscle to a single action potential
  18. 33. Adding together of twitches that occur when a muscle is stimulated at high frequency
  19. 34. Lengthening muscle contraction
  20. 35. Decrease in muscle's ability to produce force
Down
  1. 1. Bundles of muscle fibres
  2. 2. An oxygen-binding protein found in some muscle fibres
  3. 4. Type of muscle fibre with high myoglobin content (2 words)
  4. 5. Immediate high-energy molecule in muscle (2 words)
  5. 8. An increase in the number of active neurons
  6. 10. A plateau phase of muscle contraction
  7. 11. Process of muscle contraction whereby thick and thin filaments move past each other (2 words)
  8. 12. Protein that blocks myosin-binding sites on thin filaments
  9. 13. period Time between a stimulus and a response (2 words)
  10. 17. Type of muscle that is connected to bone (2 words)
  11. 19. Protein that binds calcium and initiate the crossbridge cycle
  12. 21. The relationship between the size of motor units and the order of recruitment (2 words)
  13. 22. Region of sarcomere composed of thin filaments
  14. 24. Type of muscle found in internal organs
  15. 25. Rodlike elements that contain a muscle's contractile machinery
  16. 27. Found in thin filaments in muscle fibres
  17. 28. Basic repeating units that make up myofibrils