Lateral view of the brachium and antebrachium, the lateral head of the triceps brachii m. is reflected caudally. The radial n. (1) passes from medial to lateral along the caudal surface of the brachialis m. (asterisk). After the radial n. innervates the triceps brachii m. (2), it divides into deep and superficial branches. The deep branch innervates craniolateral antebrachial muscles (3). The radial nerve continues as medial (4) and lateral (5) superficial branches of the radial n. These supply skin of the cranial antebrachium and dorsal manus. The superficial brachial a. (6) is visible cranial to the brachilis m.

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