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.

<p></p><p>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.</p>
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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

<p>bone that moves toward the origin</p>
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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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