Insertion
Muscle attaches
Muscle shortens
Agonist
Muscle lengthen
Antagonist
Reciprocal inhibitions
Prevents muscle from snapping
Concentric
Shorten muscle
Eccentric
Lengthen muscle
Isotonic
No change in length
Muscles work as
Fixates and synergists
Fixators
Stabilize joint while muscles work
Synergists
Help control movement
Origin
Muscle starts