Origin of Extensor Pollicis Brevis
Posterior surfaces of radius and interosseous membrane
Insertion of Extensor Pollicis Brevis
Base of proximal phalanx of thumb
Muscle Function of Extensor Pollicis Brevis
Extends proximal phalanx of thumb at carpometacarpal joint
Artery Supply of Extensor Pollicis Brevis
Posterior interosseous artery
Extensor Pollicis Brevis Video