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Abductor Pollicis Longus Muscle

Medically reviewed by: Stephanie Curreli, MD, PhD
Last Updated: Jun 26, 2015

The abductor pollicis longus muscle is a long, thin muscle of the forearm that serves to pull the thumb away from the palm. Abduction refers to movement of a limb away from the central line of the body or of a digit away from the axis of a limb. Muscles, then, that carry out this type of movement are called abductor muscles.