extensor carpi radialis brevis (muscle)
ex·ten·sor car·pi ra·di·a·lis bre·vis (mus·cle)
[TA]muscle of posterior compartment of forearm; origin, lateral epicondyle of humerus; insertion, base of third metacarpal bone; action, extends and abducts hand at wrist joint; nerve supply, deep radial.
Synonym(s): musculus extensor carpi radialis brevis [TA], short radial extensor muscle of wrist
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