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11 Cards in this Set
- Front
- Back
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Origin |
the site of muscle's attachment to the more stable bone (superior part of muscle) |
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Insertion |
the site of a muscle's attachment to the more moveable bone |
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Belly (body) |
the fleshy part of a muscle located between the origin and insertion of a muscle |
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Leverage |
a mechanical advantage. the force created to achieve movement |
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Lever (bone itself) |
a rigid structure that can move around a fixed point (called the fulcrum) |
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effort |
the force which causes movement (i.e. the muscle) |
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Load |
( = resistance) the force which opposes movement |
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Agonist |
( = prime mover, muscle that does the action) the muscle that contracts to produce the desired movement |
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Antagonist |
the muscle that stretches and yields to the agonist |
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Synergist |
the muscle(s) that prevent unwanted movement and aid in the movement of the agonist |
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Fixator |
the muscle(s) that stabilize the origin of the agonist |
