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Across 3. Example of a Parallel muscle fasicle arrangement. (Fasicles parallel to long axis of the muscle) 6. Contractile protein that forms thick filaments. 9. Type of skeletal muscle fiber that has smaller fibers, more mitochondria, and contains red fibers. 11. Structural protein that connect thick and thin filaments. ( 2 of 3) 14. Type of Pennate muscle that is most common, and has fibers along both sides of the tendon. 15. Structural protein that connect thick and thin filaments. ( 3 of 3) 16. Regulatory protein of myofilaments. 2of2 17. Formed by thick filaments with the darker outer sections being the regions of overlap. 18. Structural Protein that connect thick and thin filaments. (1 of 3) 19. 1 of 4 properties of muscle tissue. 20. Structural protein of thin filaments. 25. Include body movement, posture, temperature regulation, storage and movement of materials, and support of the abdominopelvic organs. 27. Type of muscle contraction in which the length of the muscle does not change because the tension never exceeds the resistance. 31. Responsible for breaking down acetylcholine at the neuromuscular junction. 32. Only contains thick filaments in a sarcomere. 35. 2 of 3 Primary actions of muscle. 40. When release from the nerve endings, binds to receptors on the muscle fiber membrane to initiate muscle contraction. 41. When the body's immune system attacks the acetylcholine receptors of neuromuscular junctions. 42. 1 of 3 Primary actions of muscle. 43. Example of a circular muscle fasicle arrangement. (Fibers are concentrically arranged around an opening) 44. Muscle fiber either contracts fully or not at all. 45. Toxin produced by the baterium "CB" that prevents the release of acetylcholine at the neuromuscular junction 46. Type of Pennate muscle where all fibers are on the same side of the tendon.

Down 1. Some motor units are always active, even when at rest. 2. Type of muscle fiber that resemble fast fibers, have a greater resistance to fatique. 4. Where the H&I bands gets smaller, the zone of overlap gets larger, the Z Lines move closer together, and the width of the A band never changes. 5. Formed by a transverse protein network that connects the thin filaments. 7. Contractile protein that forms thin filaments. 8. Type of muscle contraction where tension produced exceeds the resistance, and muscle fibers shorten to create motion. 10. Reduction of muscle size, tone, and power, due to reduced stimulation. 12. 4 of 4 properties of muscle tissue. 13. 2 of 4 properties of muscle tissue. 21. Example of a convergent muscle fasicle arrangement. (Triangular with common point of attachment) 22. Are activators of skeletal muscle contraction. 23. Hereditary disease in which muscle tissue is replaced by connective tissue. 24. Increased muscle fiber size due to increased stimulation. 26. A long cylindrical striated multinucleated cell. 28. Type of Pennate muscle that has branches of the tendon within the muscle. 29. This is where striations of skeletal muscle result from. 30. Regulatory protein of myofilaments. 1of2 33. Type of muscle fiber that is larger in diameter, contains larger glycogen reserves, forms whit fibers, and are produced by weight lifting. 34. Is defined as the distance from one Z disk to the next adjecent Z disk. And is the functional contractile unit of skeletal muscle. 36. 3 of 3 Primary actions of muscle. 37. Resemble a feather, have one or more tendons throughout the body. 38. Only contains thin filaments in a sarcomere. 39. 3 of 4 properties of muscle tissue.