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11 terms

muscle actions

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Flexor
Decreases a joint angle
Extensor
Increases a joint angle
Abductor
Moves a bone away from the midline
Adductor
Moves a bone closer to the midline
Levator
Raises or elevates a body part
Depressor
Lowers or depresses a body part
Supinator
Turns palm anteriorly
Pronator
Turns palm Posteriorly
Sphincter
Decreases the size of an opening
Tensor
Makes a body part rigid
Rotator
Rotates a bone around its logitudinal axis