Table of Contents

Lessons 1. Muscular System Go Go 2. Diseases and Disorders Go Go

Table of Contents  The muscular system contains over 600 muscles.  The muscular system performs these functions: ▫Helps with body movement ▫Supports body posture ▫Produces heat and energy ▫Protects internal organs ▫Helps move blood, food, and waste products through the body ▫Opens and closes body openings

Table of Contents  All muscles have four common traits: ▫Excitability or Irritability ▫Contractibility ▫Extensibility ▫Elasticity  Muscle tone

Table of Contents  Cardiac  Visceral  Skeletal

Table of Contents  Involuntary Muscles  Voluntary Muscles

Table of Contents  Tendons  Origin  Insertion  Fascia

Table of Contents  Flexion  Extension  Abduction  Adduction  Rotation

Table of Contents  Loss of muscle tone can result from serious illness.  Lack of muscle use can result in: ▫Atrophy ▫Contracture

Table of Contents  Muscle Strain  Fibromaylgia  Muscular Dystrophy