Fraenulum veli

Frenulum of superior medullary velum
Hind- and mid-brains; postero-lateral view. (Frenulum veli labeled at center left.)
Details
Part of	superior medullary velum
Identifiers
Latin	frenulum veli medullaris superioris
NeuroNames	ancil-323
Dorlands /Elsevier	f_16/12379229
TA	A14.1.05.005
FMA	84380
Anatomical terms of neuroanatomy []

The frenulum veli, or frenulum of superior medullary velum, also known as the frenulum veli medullaris superioris, cerebellar frenulum, or frenulum cerebelli is a slightly raised white band passing from the inferior end of the medial longitudinal fissure, through the groove between the quadrigeminal bodies, and down to the superior medullary velum.

On either side of this band the trochlear nerve emerges, and passes forward on the lateral aspect of the cerebral peduncle to reach the base of the brain.