Term
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Definition
| origin is the non-moving point of attachment when a muscle contracts. |
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Definition
| insertion moves toward the point of origin |
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Term
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Definition
| A lever is a fixed structure that can move around a fixed point. The lever is acted on at two different points by two different forces: the effort and the load. |
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Term
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Definition
| The point or support on which a lever turns. The position of the fulcrum, relative to the positions of the load and effort, determines the type of lever. |
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Term
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Definition
| first-class lever, with fulcrum between load and effort, as in a crowbar; |
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Term
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Definition
| second-class lever, with load between fulcrum and effort, as in a wheelbarrow; |
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Term
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Definition
third-class lever, with effort between fulcrum and load, as in a person's forearm, where the fulcrum is the elbow and the load is something held in the hand.
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Term
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Definition
| Bones act as levers, joints function as fulcrums of these levers. |
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Term
| Define load or resistance |
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Definition
| load or resistance is that which opposes movement |
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Term
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Definition
| muscle that is responsible for an action |
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Term
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Definition
| Performs opposite action of prime mover, opposite side of body. |
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Term
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Definition
| Fixator - who's action helps hold a particular position or stablize a body part. i.e., don't let wrist fold over while flexing fingers. |
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Term
| 7 criteria that are used to name skeletal muscles. |
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Definition
| 1. location of the muscle, 2. shape of the muscle, 3. relative size of the muscle, 4. direction of muscle fibers, 5. number of origins, 6. location of the attachments, 7. action |
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