Ulnar Nerve: Origin, Branches, and Distribution - A Comprehensive Guide

Origin: Medial aspect of the brachial plexus, roots C8-T1

Branches:

- Articular branches to elbow joint

- Muscular branches to flexor carpi ulnaris and medial half of flexor digitorum profundus

- Dorsal cutaneous branch

- Palmar cutaneous branch

- Motor branch to hypothenar muscles

Termination:

- Distribution as cutaneous sensation of palmar and dorsal aspects of medial 1.5 digits