decreases a joint angle
flexor
increases a joint angle
extensor
moves a bone away from the midline
abductor
moves a bone closer to midline
adductor
raises or elevates a body part
levator
lowers or depresses a body part
depressor
turns palm anteriorly
supinator
turns palm posteriorly
pronator
decreases the size of an opening
sphincter
makes a body part rigid
tensor
rotates a bone around its longitudinal axis
rotator