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Extensor pollicis longus

Extensor pollicis longus at rest

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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

Brachial Plexus Trunk

Middle trunk Lower trunk

Brachial Plexus Cord

Brachial Plexus Division

Posterior division

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