The Probert Encyclopaedia of Medicine

PALMAR INTEROSSEI

The palmar interossei consists of three small muscles that help bend the fingers. The first muscle originates from the second metacarpal bone and inserts into the ulnar side of the index finger. The second muscle originates from the fourth metacarpal bone and inserts into the radial side of the little finger. The third muscle originates from the fifth metacarpal bone and also inserts into the radial side of the little finger. The muscles are innervated by the ulnar nerve and supplied by the palmar metacarpal artery, which is a part of the palmar arch.
Research Palmar Interossei