Medial Brachial and Antebrachial Cutaneous Nerves

The Medial Brachial Cutaneous nerve (T1,2) arises from the medial cord and supplies the skin at the medial side of the arm (from the axilla to the elbow).

The Medial Antebrachial Cutaneous nerve (C8, T1) arises from the medial cord and supplies the skin at the medial flexor side of the forearm, and the ulnar marginal zone of the extensor side of the forearm (from the elbow to the wrist).