NCIt definition : A muscle originating at the lateral epicondyle of the humerus and inserted at the
base of the proximal and middle phalanges as well as the base of the distal phalanges
which controls the extension of the fingers.;
Alternative definition : CDISC: A muscle of the hand, in general extending from the lateral epicondyle of the
humerus to the base of the proximal, middle, and distal phalanges; primary function
is to extend the fingers.;