Three types of muscle - insertion mobile end of attachment...

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The Muscular System Three types of muscle * Skeletal muscle- attaches to and moves bone * is striated * is voluntary * Smooth muscle- located in the walls of internal structures * non-striated * Involuntary * Cardiac muscle Functions of Muscle Tissue * Motion * Movement of substances within the body * Stabilizing body position and regulating organ volume * maintaining posture * maintaining food storage in stomach * Heat production * muscle contraction generates 85% of the body’s heat Characteristics of Muscle Tissue * Excitability- receive and respond to stimuli * Contractility- ability to shorten and thicken * Extensibility- ability to stretch * Elasticity- ability to return to its original shape after contraction or extension General Anatomy of Skeletal Muscle * origin - stationary end of muscle attachement
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Unformatted text preview: * insertion- mobile end of attachment * belly- thicker middle region Structure of Skeletal Muscle Connective tissue components * fascia- sheets or bands of fibrous c.t. around organs, muscle and beneath the skin * superficial fascia (subcutaneous layer)- composed of areolar c.t. and adiose tissue and is located under the skin * deep fascia-composed of dense, irregular c.t. that holds muscles together and from which the various subdivisions of muscle c.t. are derived Production of ATP in Muscle Fibers * Muscles have three ways to produce ATP * from creatine phosphate-unique to muscle tissue * anaerobic cellular respiration using glycogen * aerobic cellular respiration using glycogen, fatty acids, and amino acids...
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