Basic definitions of Interactions of Skeletal Muscles in the Body (e.g., agonist, synergist)
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8 Terms
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Agonist
The main muscle responsible for generating a specific movement during an action.
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Synergist
A muscle that assists the agonist in performing a movement. It can also be a fixator that stabilizes the bone that is the attachment for the prime mover’s origin.
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Antagonist
Muscles with the opposite action of the agonist, they work in maintaining posture and rapid actions.
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Origin
the end of the muscle attached to the fixed bone (bone that doesn’t move during contraction)
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Insertion
bone that moves toward the origin
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flexion
Bending a joint to decrease the angle.
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Extention
Increase the angle between 2 structures
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Note 
Flashcards (39)