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Skeletal Muscle Act.

Skeletal Muscle Actions

QuestionAnswer
Flexion Decreasing the angle between two bones; bending a limb
Extension Increasing the angle between two bones; straightening out a limb
Abduction Movement away from the midline of the body
Rotation Circular movement around an axis (central point). Internal rotation is toward the midline and external rotation is away from the midline.
Dorsiflexion Decreasing the angle of the ankle joint so that the foot bends backwards (upwards). This is the opposite movement of stepping on the gas pedal when driving a car.
Plantar Flexion Motion that extends the foot downward toward the ground as when pointing the toes or stepping on the gas pedal. Plant/o means sole of the foot.
Supination As applied to the hand and forearm, the act of turning the palm up. As applied to the foot, it is outward roll of the foot during normal motion.
Pronation As applied to the hand and forearm, the act of turning the palm down. As applied to the foot, it is inward roll of the foot during normal motion.
Created by: xocheronnieox
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