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STUDY GUIDE And QUESTIONS - KEYES CHAPTER 9 MUSCLES AND MUSCLE TISSUE 1. Compare and contrast the basic types of muscle tissue. 2. List four important functions of muscle tissue. 3. Describe the gross structure of a skeletal muscle. 4. Describe the microscopic structure and functional roles of the myofibrils, sarcoplasmic reticulum, and T tubules of muscle fibers (cells). 5. Explain the sliding filament mechanism. 6. Define motor unit and explain how muscle fibers are stimulated to contract. 7. Define muscle twitch and describe the events occurring during its three phases. 8. Explain how smooth, graded contractions of a skeletal muscle are produced. 9. Differentiate between isometric and isotonic contractions. 10. Describe three ways in which ATP is regenerated during skeletal muscle contraction. 11. Define oxygen debt and muscle fatigue. List possible causes of muscle fatigue. 12. Describe factors that influence the force, velocity, and duration of skeletal muscle contraction. 13. Describe three types of skeletal muscle fibers and explain the relative value of each type. 14. Compare and contrast the effects of aerobic and resistance exercise on skeletal muscles and on other body systems. 15. Compare the gross and microscopic anatomy of smooth muscle cells to that of skeletal muscle cells. Review Questions Multiple Choice/Matching (Some questions have more than one correct answer. Select the best answer or answers from the choices given.) 1. The connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called the (a) epimysium, (b) perimysium, (c) endomysium, (d) periosteum. 2. A fascicle is a (a) muscle, (b) bundle of muscle fibers enclosed by a connective tissue sheath, (c) bundle of myofibrils, (d) group of myofilaments. 3. Thick and thin myofilaments have different compositions. For each descriptive phrase, indicate whether the filament is (a) thick or (b) thin. ... View Full Document

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