7b_MuscleFunction_Review_Sheet - Muscular System...

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Unformatted text preview: Muscular System Objectives/Study Guide Reading Assignment: You should read: Chapter 1 Section 1: Definitions. Where appropriate, include illustrations and/or a description of what conditions, hormones, enzymes engage the given process, etc. 1. Epimysium 15. M Line 29. Motor Impulse 2. Muscle Fiber 16. Z Line 30. Actomyosin Complex 3. Endomysium 17. I band 31. Fast twitch muscle fibers 4. Perimysium 18. H zone 32. Slow twitch muscle fibers 5. Fasciculus 19. Crossbridges 33. Type I fiber 6. Sarcolemma 20. Troponin 34. Type II fiber 7. Sarcoplasm 21. Tropomyosin 35. SO fiber 8. Sarcoplasmic Reticulum 22. Sliding Filament Theory 36. FOG fiber 9. T ­tubule 23. Efferent Nerves 37. FG fiber 10. Myofibrils 24. Afferent Nerves 38. Isometric Contraction 11. Myoglobin 25. Acetylcholine 39. Static Contraction 12. Sarcomere 26. Neuromuscular Junction 40. Dynamic Contractions 13. Actin 27. Motor Unit 41. Eccentric Actions 14. Myosin 28. Depolarization 42. Concentric Actions Section 2: Short Answers. Students should be able to answer the following questions: 43. Label the components of an entire muscle, muscle fiber, and within a myofibril. 44. What are the differences between ST, FTIIb (or Type IIX), and intermediate muscle fibers? 45. Given a specific type of training, be able to describe the physiological adaptations that occur within each fiber. 46. Explain the sliding filament theory of muscle contraction. Be sure to know all of the steps involved in a muscle contraction. 47. During a concentric contraction, identify the areas within a sarcomere that shorten. 48. Know the anatomy of a muscle. Including nervous innervations and capillary density. 49. Know the two primary subdivisions of the fast ­twitch muscle fibers. 50. Why is it incorrect to refer to dynamic contractions as isotonic contractions? 51. What are the primary factors in determining fiber composition? 52. Define oxidative capacity and relate it to how muscle fibers are categorized. 53. Can fiber type be altered? Support your answer. 54. Elite endurance athletes have primarily what type of fiber type? Elite sprint athletes have what type of fiber type? ...
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