key term - Abductor pollicis brevis

Definition

The abductor pollicis brevis is a muscle in the hand that allows for the abduction of the thumb, moving it away from the palm and other fingers. It plays a crucial role in grasping objects and manipulating tools by enabling thumb movement.

Related terms

Flexor Pollicis Longus: This muscle bends (flexes) the thumb towards the palm, aiding in gripping activities.

Opponens Pollicis: A muscle that rotates and brings the thumb across the palm, enabling pinching and precision grips.

Adductor Pollicis: This muscle draws the thumb towards the fingers, assisting in making a tight fist or gripping objects tightly