| Brain: Superior medullary velum | ||
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| Coronal section of the pons, at its upper part. (Ant. med. velum labeled at center top.) | ||
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| Under surface of the cerebellum. (Ant. medullary velum labeled at center top.) | ||
| Latin | velum medullare superius | |
| Gray's | subject #187 793 | |
| NeuroNames | hier-588 | |
| NeuroLex ID | birnlex_1300 | |
The superior medullary velum (anterior medullary velum, valve of Vieussens) is a thin, transparent lamina of white substance, which stretches between the superior cerebellar peduncles; on the dorsal surface of its lower half the folia and lingula are prolonged.
It forms, together with the superior cerebellar peduncle, the roof of the upper part of the fourth ventricle; it is narrow above, where it passes beneath the facial colliculi, and broader below, where it is continuous with the white substance of the superior vermis.
A slightly elevated ridge, the fraenulum veli, descends upon its upper part from between the inferior colliculi, and on either side of this the trochlear nerve emerges.
Blood is supplied by branches from the superior cerebellar artery.
See also
Additional images
 Scheme of roof of fourth ventricle. |
 Mesal aspect of a brain sectioned in the median sagittal plane. |
 Rhomboid fossa. |
 Human brain midsagittal view description |
External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
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