Cervical plexus

A nerve plexus in the neck, formed from branches of the ventral rami of C1 - C4, deep to the sternocleidomastoid muscle. The cutaneous (sensory) branches of the cervical plexus innervate the skin of the neck, and include the great auricular n., transverse cervical n., lesser occipital n. and the several supraclavicular nn. The motor branches form the ansa cervicalis, and innervate most of the infrahyoid strap muscles