What is an action of extensor carpi radialis longus?

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Multiple Choice

What is an action of extensor carpi radialis longus?

Explanation:
Extensor carpi radialis longus moves the wrist by pulling toward the radial (thumb) side of the hand. Because it inserts on the base of the second metacarpal, its contraction pulls the hand outward, producing abduction (radial deviation) of the wrist. It also helps extend the wrist, since it crosses the dorsal aspect of the wrist, but the distinct and typical action you can point to is abducting the wrist. This is why abduction of the wrist is a correct action for this muscle.

Extensor carpi radialis longus moves the wrist by pulling toward the radial (thumb) side of the hand. Because it inserts on the base of the second metacarpal, its contraction pulls the hand outward, producing abduction (radial deviation) of the wrist. It also helps extend the wrist, since it crosses the dorsal aspect of the wrist, but the distinct and typical action you can point to is abducting the wrist. This is why abduction of the wrist is a correct action for this muscle.

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