The Musculus opponens pollicis is a short skeletal muscle that belongs to the thenar muscles of the hand.
Anatomy
Origin
The Musculus opponens pollicis originates from the Ligamentum carpi transversum and the Os trapezium.
Insertion
The short tendon of the Musculus opponens pollicis runs obliquely distally and laterally and inserts on the lateral aspect of the Os metacarpale I.
Innervation
The Musculus opponens pollicis is innervated by the Median nerve.
Function
The Musculus opponens pollicis is responsible for bringing the thumb into opposition with the palm, a movement known as opposition. The Musculus opponens pollicis assists with adduction.
