Example image of eyePlorer eyePlorer map for 'Cervical plexus': Anterior ramus of spinal nerve Cervical nerves Neck Plexus Levator scapulae muscle Scalene muscles Splenius cervicis muscle Accessory nerve Hypoglossal nerve Sympathetic trunk Sternocleidomastoid muscle Head Posterior triangle of the neck Cutaneous innervation Ansa cervicalis Concha Ear canal Geniohyoid muscle Great auricular nerve Lesser occipital nerve Occipital Omohyoid muscle Phrenic nerve Shoulder Sternohyoid muscle Sternothyroid muscle Supraclavicular nerves Suprascapular nerve Thorax Thyrohyoid muscle Transverse cervical nerve Cervical branch of the facial nerve Lesser auricular nerve Nerve plexus Chassaignac tubercle Forehead List of subjects in Gray's Anatomy: IX. Neurology Jean Cruveilhier Posterior branches of cervical nerves Spinal disc herniation