extensor carpi radialis longus (muscle)
ex·ten·sor car·pi ra·di·a·lis lon·gus (mus·cle)
[TA]muscle of posterior (extensor) compartment of forearm; origin, lateral supracondylar ridge of humerus; insertion, posterior aspect of base of second metacarpal bone; action, extends and abducts hand at wrist joint; nerve supply, radial.
Synonym(s): musculus extensor carpi radialis longus [TA], long radial extensor muscle of wrist