Introduction to Myology Dr Anita Rani Professor Anatomy KGMU Dr Anita Rani Professor Anatomy KGMU

Major functions of muscle Regulating movement Stabilizing body positions Movement of materials around body Properties:  Excitability  Contractility  Extensibility  Elasticity Regulating movement Stabilizing body positions Movement of materials around body Properties:  Excitability  Contractility  Extensibility  Elasticity

3 different types of muscle Skeletal – Move skeleton – Striated – Voluntary Cardiac – Striated – Involuntary – Autorhythmicity Smooth – Not striated – Usually involuntary – Some autorhythmicity Skeletal – Move skeleton – Striated – Voluntary Cardiac – Striated – Involuntary – Autorhythmicity Smooth – Not striated – Usually involuntary – Some autorhythmicity

Organization of a Muscle

Motor Unit

Parts of a Muscle

Types of Skeletal Muscle

Types of skeletal Muscles

Muscle contraction

Functions of muscles Prime Mover Fixators Synergist Antagonist

Applied Anatomy Muscle Dysfunction & Paralysis Absence of muscle tone Muscle Soreness or Pulled muscle Growth & Regeneration of Skeletal muscle Muscle testing  Manual  EMG Hypertrophy of the myocardium Myocardial Infarction Hypertrophy & Hyperplasia of smooth muscles Muscle Dysfunction & Paralysis Absence of muscle tone Muscle Soreness or Pulled muscle Growth & Regeneration of Skeletal muscle Muscle testing  Manual  EMG Hypertrophy of the myocardium Myocardial Infarction Hypertrophy & Hyperplasia of smooth muscles