Median nerve

Median nerve
Median Nerve
The median nerve enters the palm by passing behind
the flexor retinaculum and through the carpal tunnel. It
immediately divides into lateral and medial branches.
The muscular branch takes a recurrent course around
the lower border of the flexor retinaculum and lies about
one fingerbreadth distal to the tubercle of the scaphoid; it
supplies the muscles of the thenar eminence (the abductor
pollicis brevis, the flexor pollicis brevis, and the opponens
pollicis) and the 1st lumbrical muscle.
The cutaneous branches supply the palmar aspect of
the lateral three and a half fingers and the distal half of the
dorsal aspect of each finger. One of these branches also supplies
the second lumbrical muscle.
Note also that the palmar cutaneous branch of the
median nerve given off in the front of the forearm (Fig. 9.55)
crosses anterior to the flexor retinaculum and supplies