In a median longitudinal section of the skull the hypoglossal foramen is seen, and just in front of it a small foramen for a vein.
Some branches of the cervical plexus, and the hypoglossal nerve are also shown.
Just external to the foramen magnum is a small foramen for the exit of the hypoglossal nerve (figs. 44 and 45, XII).
The motor nerve of the tongue is the ninth pair, the hypoglossal.
The vertebral spinal part—the region of the hypoglossal nerves.
Other cranial nerves, particularly the oculomotor and the hypoglossal, may also be implicated.
hypoglossal hy·po·glos·sal (hī'pə-glô'səl)
Of or relating to the area under the tongue.
Of or relating to the hypoglossal nerve.