Muscle Mvts Sept 2026
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12 Terms
origin
one end of the muscle is attached to a nonmovable part of the skeleton
insertion
the other end of the muscle is attached to a movable bone
flexion
a muscle causes a decrease in the angle between origin and insertion
extension
a muscle causes an increase in the angle between the origin and insertion
plantar flexion
the toes are pointed out as when standing on tiptoe; the angle between the calcaneus and the lower leg is decreased
dorsiflexion
the toes are flexed upward; the angle between the metatarsals and the lower leg is decreased
adduction
a body part is moved toward the midline of the body
abduction
a body part is moved away from the midline of the body
rotation
the turning of a body part around its axis
circumduction
the movement of the distal end of a body part in a circle
elevation
raising a body part
depression
lowering a body part