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MUSCLE
3 Types
Skeletal: Attached to the skeleton
Smooth: Walls of the hollow organs
Cardiac: Pumps the heart
Skeletal Muscle
Voluntary: Under conscious control
Striated: Looks striped
Anatomy of a muscle cell
See diagram below
IPad MB Anatomy app
Muscle structure
The sarcomere
Muscles working together
Agonists or prime movers
Antagonists
Synergists
Fixators
Muscle identification
Origin: Where it starts
Insertion: Where it ends
Action: What it does
Muscle always pulls toward the origin