Lateral view, left side

Cat information:
anconeus
origin:  distal end of dorsal surface of
        humerus
insertion:  lateral surface of ulna from
        distal margin of the semilunar
        notch to proximal end of  the
        olecranon
nerve:  radial
action:  pronation of hand

Posterior view, right side Posterior view of origin, right side
Posterior view of insertion, right side

Human information:
anconeus
origin:  posterior surface of lateral epicondyle
        of humerus
insertion:  lateral aspect of olecranon process
        and posterior surface of proximal portion
        of ulna
nerve:  radial (C7-C8)
action:  extension of the forearm,
        pronation of hand, prevents annular ligament
        from getting pinched in olecranon fossa

I hope that before the test you know your gluteals from your anconeus!  The above drawings of the origin and insertion might help visualize this information (red is the origin, blue the insertion).

COPYRIGHT 2008 by William C. Johnson II
ALL RIGHTS RESERVED!