Opponens Pollicis - Podcast Version TeachMeAnatomy 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The opponens pollicis is a thenar muscle located within the hand. It is the largest of the thenar muscles, and is located underneath the flexor pollcis brevis and abductor pollicis brevis. Attachments: Originates from the tubercle of the trapezium and the associated flexor retinaculum. Inserts onto the lateral margin of the first metacarpal. Actions: Opposition of the thumb Innervation: Median nerve (recurrent branch) Blood supply: Superficial palmar arch By TeachMeSeries Ltd (2025) Figure 1Palmar view of the thenar muscles. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Pro Feature - Dissection Atlas The recurrent branch of the median nerve arises in the hand to innervate the thenar muscles. The overlying abductor pollicis brevis muscle has been removed in this dissection. The recurrent branch of the median nerve arises in the hand to innervate the thenar muscles. The overlying abductor pollicis brevis muscle has been removed in this dissection. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Rate This Article