Opponens pollicis

Definition

The opponens pollicis is a small, triangular muscle in the hand that allows the thumb to move across the palm, facilitating opposition and gripping actions. It plays a crucial role in enabling fine motor skills such as writing and manipulating objects.

Related terms

Abductor Pollicis Brevis: A muscle of the hand that aids in moving the thumb away from the palm, increasing its range of motion.

Flexor Pollicis Brevis: A muscle that flexes the thumb, contributing to grip strength and dexterity.

Thenar Eminence: The fleshy mound on the palm at the base of the thumb, largely formed by muscles including the opponens pollicis, contributing to thumb movements and grip