Muscle Physiology Crossword Puzzle

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Across
  1. 2. ___ ____ is a substance or technique used to improve performance
  2. 4. ____ contraction is happens when there is no change in length of muscle
  3. 6. ___ ____ are ubiquitous in eukaryotes and responsible for a wide range of functions
  4. 8. ___ twitch fibers are activated in short-term, sprint activities, and forceful contractions which rely primarily on anaerobic metabolism for energy.
  5. 14. ___ process is occurs when the binding site is uncovered and actin and myosin can interact.
  6. 17. ___ is the increase in fiber number
  7. 18. ___ contraction is the lengthening of the muscle
  8. 20. ___ is the ATP-utilizing motor protein that generates movement by interaction with actin filaments.
Down
  1. 1. What is considered the cytoplasm of the cell?
  2. 3. One shape of actin that polymerizes and unfolds into
  3. 5. ___ is the capacity of a skeletal muscle for adaptive change to occur
  4. 7. ___ is the basic contractile unit, from z line to z line
  5. 9. ____ microscopy provides much greater resolution of muscle structure.
  6. 10. What is the appearance of a skeletal muscle?
  7. 11. ___ is the increase in fiber size
  8. 12. actin filament that extends from either side and passes from myofibril to myofibril
  9. 13. What is the primary protein in thin filament?
  10. 15. ___ twitch fibers are fatigue resistant and good for prolonged exercise
  11. 16. ___ microscopy has resolution limited by the wavelength of illuminating light
  12. 19. ___ controls movement in the brain and spinal cord