Hypoglossal trigone
trigonum nervi hypoglossi
Caudal part of the floor of the fourth ventricle (rhomboid fossa), on each side of the midline, below the facial colliculus. Under it lies the nucleus of the hypoglossal nerve.

In the full entry
The full entry, with every field, sources, quiz and clinical correlations, is in the atlas.
- Structure
- Clinical