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