Example image of eyePlorer eyePlorer map for 'Posterior triangle of the neck': Neck Accessory nerve Brachial plexus External jugular vein Occipital triangle Omohyoid muscle Subclavian artery Subclavian triangle Cystic hygroma Supraclavicular nerves Investing layer of deep cervical fascia Superficial cervical lymph nodes Anterior triangle of the neck Triangles of the neck Cervical plexus Cervical lymph nodes Spinal root of accessory nerve Splenius capitis muscle Erb's point (neurology) Migraine surgery