Final answer:
The lateral cutaneous nerve of the forearm is a continuation of the musculocutaneous nerve and supplies sensory innervation to the lateral aspect of the forearm.
Step-by-step explanation:
The lateral cutaneous nerve of the forearm is a continuation of the musculocutaneous nerve, which arises from the brachial plexus and contains fibers from the C5-C7 spinal nerves. It supplies sensory innervation to the lateral aspect of the forearm. The nerve runs subcutaneously along the lateral aspect of the upper arm and forearm, providing sensation to the skin.