Extensor indicis :-
Muscle details :-
a narrow, elongated skeletal muscle in the deep layer of the dorsal forearm, placed medial to, and parallel with, the extensor pollicis longus. Its tendon goes to the index finger, which it extends.
posterior surface of shafts of ulna .
extensor expansion of index finger .
Nerve supply :-
deep branch of radial nerve .
extends metacarpophalangeal joint of index finger .