Types of Muscles
Smooth Muscle
  • Form many organs (ex. stomach)
  • Cannot exercise
  • found in the stomach (involuntary) 
Involuntary Muscles
Work without you trying.
Muscle Structure
How organs help you do work. 
Cardiac Muscle
  • heart
  • providing energy 
  • hardest working muscles
Voluntary Muscles
The normal muscles you exercise.
Skeletal Muscles
  • referred to by "muscles"
  • the colloquial muscles or voluntary because you can control them
  • Muscle
  • Muscle Fiber
  • Myofibril
  • Sacromere 
Sliding Filament Theory 
actins and myosins slide in and out during muscle contraction but do not change length
Sliding Filament Theory

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