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ch10 - Chapter 10 MUSCLE TISSUE Chapter Synopsis This...

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Chapter 10 MUSCLE TISSUE Chapter Synopsis This chapter deals with the physiological characteristics of muscle tissue and its histological classification into skeletal, cardiac, and smooth types. Also considered are the connective tissue components of skeletal muscle, the nerve and blood supply, the microscopic anatomy of a skeletal muscle fiber including the sarcolemma, T tubules, sarcoplasm, myofibrils, sarcoplasmic reticulum, filaments, sarcomere, and muscle proteins. The contraction and relaxation of skeletal muscle fibers is considered including the sliding filament mechanism, the contraction cycle, excitation-coupling, the length-tension relationship, active and passive tension, and the neuromuscular junction. Muscle metabolism is broken down into the three sources for ATP production, muscle fatigue, and oxygen consumption after exercise. The multiple factors that combine to allow the body to adjust muscle tension are explored. Types of skeletal muscle fibers and the distribution and recruitment of the different types are examined. Cardiac and smooth muscle are discussed and compared and contrasted to skeletal muscle. Regeneration of muscle tissue is discussed. The developmental anatomy of the muscular system and the effects of aging on muscle tissue are explored. Medical disorders including myasthenia gravis, muscular dystrophy, and abnormal contractions of skeletal muscle are described. Clinical applications included are muscular atrophy and hypertrophy, exercise-induced muscle damage, rigor mortis, pharmacology of the NMJ, creatine supplementation, endurance training
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versus strength training, and anabolic steroids. Chapter Outline and Objectives INTRODUCTION 1. Describe the primary function of muscle. 2. Define myology. OVERVIEW OF MUSCLE TISSUE Types of Muscle Tissue 3. Describe the major structural and functional differences among the three types of muscle tissue. Functions of Muscle Tissue 4. Describe the four key functions of muscle. Properties of Muscle Tissue 5. Describe the four special properties of muscle tissue. SKELETAL MUSCLE TISSUE Connective Tissue Components 6. Describe the nonconnective tissue functions of the superficial and deep fascia.
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