Dorsal interossei (hand)
Related Anatomy
Nerve
Ulnar nerve
Deep branch (of ulnar nerve)
Plexus
Brachial plexus
Muscle Group
Ulnar nerve - Intrinsic hand group
Muscle Action
Finger abduction (finger spread)
Nerve Root
T1
C8
Brachial Plexus Trunk
Lower trunk
Brachial Plexus Cord
Medial cord