Anatomy: Cutaneous Nerves and Superficial Veins of the Shoulder and Arm

Cutaneous Nerves - Upper Limb

Nerves

Supraclavicular nerve Arises from the cervical plexus (C3, C4) and innervates the skin over the upper pectoral, deltoid, and outer trapezius areas. Medial brachial cutaneous nerve Arises from the medial cord of the brachial plexus and innervates the medial side of the arm. Medial antebrachial cutaneous nerve Arises from the medial cord of the brachial plexus and innervates the medial side of the forearm. Lateral brachial cutaneous nerve Arises from the axillary nerve and innervates the lateral side of the arm. Lateral antebrachial cutaneous nerve Arises from the musculocutaneous nerve and innervates the lateral side of the forearm. Posterior brachial and antebrachial cutaneous nerves Arise from the radial nerve and innervate the posterior sides of the arm and forearm, respectively. Intercostobrachial nerve Is the lateral cutaneous branch of the second intercostal nerve and emerges from the second intercostal space by piercing the intercostal and serratus anterior muscles. May communicate with the medial brachial cutaneous nerve.