Skeletal Muscle (F2025)

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Across
  1. 2. Smallest of a group of muscles, such as in the gluteus
  2. 3. Plasma membrane of a muscle fiber
  3. 5. Ability of a muscle to be stretched or extended
  4. 6. Calcium-binding protein on tropomyosin
  5. 7. Region that contains the full length of thick filaments
  6. 11. Channels allowing ions to pass between cells
  7. 15. Mark the boundary of a sarcomere
  8. 18. Muscle type in blood vessel walls responsible for changing their diameter
  9. 19. Stable action potential phase in cardiac muscle (Ca²⁺ in, K⁺ out)
  10. 21. Bundles of muscle fibers
  11. 22. Muscle fibers running parallel to the body’s long axis like in abdominal muscles
  12. 23. Pear-shaped muscle
  13. 25. Connective tissue around an entire skeletal muscle
  14. 26. Another term for unitary smooth muscle
  15. 28. Tetanus with partial relaxation between twitches
  16. 29. Smooth muscle mechanism conserving energy
  17. 30. Protein that blocks actin’s active sites
Down
  1. 1. Cylindrical organelles filling most of the muscle cell
  2. 4. Myogram phase when action potential travels along sarcolemma
  3. 6. Force output generated by a muscle
  4. 8. Contraction with constant tension and length change
  5. 9. Motor end_________: folded sarcolemma with ACh receptors
  6. 10. Excess oxygen use during recovery after exercise (abbreviation)
  7. 11. Pathway breaking glucose to pyruvate (anaerobic)
  8. 12. Structures in smooth muscle similar to Z-discs
  9. 13. T-tubule with two terminal cisternae
  10. 14. Junctions in cardiac muscle with gap junctions and desmosomes
  11. 16. Inward extensions of deep fascia dividing muscle compartments
  12. 17. Circular muscle that closes an opening (and the passage of substances)
  13. 20. ACh receptor type on the sarcolemma
  14. 21. Decline in maximum force production (can be central or peripheral)
  15. 24. System supplying quick ATP for intense activity
  16. 27. Muscle opposing an agonist, returning limb to position