Extensor pollicis longus
Related Anatomy
Nerve
Radial nerve
Posterior interosseous nerve
Plexus
Brachial plexus
Muscle Group
Radial nerve - Finger & thumb extensors
Muscle Action
Thumb interphalangeal joint extension
Nerve Root
C7
C8
Brachial Plexus Trunk
Middle trunk
Lower trunk
Brachial Plexus Cord
Posterior cord
Brachial Plexus Division
Posterior division