Lab 10: Muscle Roles

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Last updated 10:40 PM on 7/8/26
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19 Terms

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Origin

Attachment point that stays relatively stationary during contraction.

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Insertion

Attachment point that moves during contraction.

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Agonist

Main muscle responsible for a movement.

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Prime mover

What is the agonist?

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Antagonist

Muscle that opposes the agonist.

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Synergist

Muscle that assists the agonist.

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Flexion

Decreases joint angle.

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Extension

Increases joint angle.

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Hyperextension

Extension beyond anatomical position.

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Abduction

Moves away from the midline.

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Adduction

Moves toward the midline.

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Rotation

Turns a bone around its axis.

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Circumduction

Circular movement of a limb.

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Supination

Palm faces anterior/up.

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Pronation

Palm faces posterior/down.

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Inversion

Sole of foot turns inward.

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Eversion

Sole of foot turns outward.

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Plantar flexion.

Points toes downward (standing on tiptoes).

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Dorsiflexion

Lifts toes upward (walking on heels).