Which part of the body does the cervical plexus not innervate?

The cervical plexus is a network of nerves that arises from the cervical spinal nerves, primarily innervating the muscles and skin of the neck, shoulders, and parts of the head. Specifically, it provides sensory innervation to areas such as the neck and shoulders and motor innervation to some of the neck muscles.

In contrast, the thigh is innervated mainly by the lumbar plexus and part of the sacral plexus, which are different networks of nerves. The lumbar plexus provides innervation to the anterior and medial aspects of the thigh, including the quadriceps, while the sacral plexus contributes to the innervation of the posterior thigh and the lower extremities. Therefore, it is clear that the cervical plexus does not innervate the thigh. This distinction highlights the specific functional roles of different plexuses in the body and reinforces the understanding of peripheral nerve organization and innervation patterns.