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