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A_Myology_S08_copycompressed

A_Myology_S08_copycompressed - Myology FitnessandHealth...

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1 Myology Myology Your Window to Performance,  Fitness and Health Dr. S. C. Williams Vesalius 1543
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2 Introduction Introduction What is myology? What is the muscular system? System of about 600 muscles One of the largest organ  systems Correlation between muscular  system, health and fitness If you don’t use it you lose it
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3 Topics to Be Discussed Topics to Be Discussed Characteristics of muscle tissues Kinds of muscle tissue Functions of muscle tissues Gross structure of skeletal muscle Muscle working groups Muscle architecture Histological structure of skeletal muscles Motor units Embryonic origin of the muscular system How muscles are named
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4 Characteristics of Muscle Characteristics of Muscle Tissue Tissue Irritability Contractility Extensibility Elasticity Crouch 85
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5 Kinds of Muscle Tissue Kinds of Muscle Tissue Skeletal = striated  = voluntary Cardiac   Visceral  =  smooth  = involuntary Important points: Fibers, myofibrils, mitochondria, vascular &  stimuli
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6 What the Muscular What the Muscular System Is System Is Organ system of  skeletal muscles Organs are called  muscles About 600 muscles Associated structures: Fascia, bursae,  synovial tendon  sheaths, retinacula  and tendons Crouch 1985
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7 Functions of Muscle Functions of Muscle Tissues Tissues Movement of skeleton’s system of  levers Constrictors & dilators (e.G.  Sphincters) Compression of body cavities Heat generation Posture Movement of blood & lymph
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8 Muscle Tissue Types Muscle Tissue Types Smooth or visceral Involuntary Striated or skeletal Voluntary Cardiac or heart Involuntary
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9 Skeletal Muscle Micrographs Skeletal Muscle Micrographs Crouch 1985
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10 Origin of the Muscular Origin of the Muscular System System Ancient system Retrofit from a  quadruped plan Strong homologies  with other  vertebrates Similar parts and  functions with other  vertebrates Crouch 1983
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