Thumb Movers Flashcards by Allen Daniel | Brainscape

Q

Abductor Pollicis Longus

Origin

Insertion

A

Origin:

Ulna
radius
IO membrane

Insertion:

Base of M1

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Q

Abductor Pollicis Longus

Action

Innervation

A

Action:

Abduction
Thumb extension

Innervation:

Posterior IO n. (from radial n.)

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Q

Extensor Pollicis Longus

Origin

Insertion

A

Origin:

Middle third of ulna
IO membrane

Insertion:

Distal phalanx of thumb

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Q

Extensor Pollicis Longus

Action

Innervation

A

Action:

Thumb extension

Innervation:

Posterior IO n. (from radial n.)

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Q

Extensor Pollicis Brevis

Origin

Insertion

A

Origin:

Radius
IO membrane

Insertion:

Proximal phalanx of thumb

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Q

Extensor Pollicis Brevis

Action

Innervation

A

Action:

Thumb extension

Innervation:

Posterior IO n. (from radial n.)

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