2020 Online Salon
The Accessory Nerve CNXI Pathway
- Entrant Name: Emily Cheng
- Membership Type: Student Submission
- Address: Baltimore, Maryland USA
- Client: Dr. Gabriel Bever, Lydia Gregg
- Copyright: 2020 Emily Cheng
- Medium/software used: Photoshop, Illustrator
- Final presentation format: Educational Poster
- Primary Audience: Medical Students
This piece depicts the anatomy of the accessory nerve, its course through the cervical vertebrae and cranial foramina, and its final destinations.
A written description at the top introduces relevant terminology. A posterolateral view of the head and neck showcases the course of the cranial and spinal accessory nerve roots with semi-transparent musculature. The origin of the spinal root along the lateral spinal cord and brainstem is revealed through removal of the left C1-C5 vertebral laminae. The skull base, the atlas, and the axis are sectioned obliquely to offer a view of the spinal root crossing the foramen magnum and joining the cranial root before traversing the jugular foramen. These sections also reveal the final root destinations in the vagus nerve and neck musculature.
The inset highlights the connection of the internal branch of the accessory nerve to the vagus nerve and is color-coded (colorblind friendly) to distinguish between fibers of the cranial and spinal roots.