Superior medullary velum

Superior medullary velum

Infobox Brain
Latin = velum medullare superius
GraySubject = 187
GrayPage = 793

Caption = Coronal section of the pons, at its upper part. (Ant. med. velum labeled at center top.)

Caption2 = Under surface of the cerebellum. (Ant. medullary velum labeled at center top.)
IsPartOf =
Components =
Artery =
Vein =
Acronym =
BrainInfoType = hier
BrainInfoNumber = 588
MeshName =
MeshNumber =
DorlandsPre = v_05
DorlandsSuf = 12849304
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 inferior 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.

ee also

* Inferior medullary velum


External links


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Inferior medullary velum — Infobox Brain Name = Inferior medullary velum Latin = velum medullare inferius GraySubject = GrayPage = 794 Caption = Scheme of roof of fourth ventricle. The arrow is in the foramen of Majendie. 1: inferior medullary velum 2: Choroid plexus 3:… …   Wikipedia

  • frenulum of superior medullary velum — f. veli medullaris superioris …   Medical dictionary

  • velum medullare superius — superior medullary velum: a thin layer of white substance forming the roof of the superior part of the fourth ventricle, and extending from the tectal lamina in front to the fastigium behind, and between the superior cerebellar peduncles; called… …   Medical dictionary

  • Medullary striae of fourth ventricle — Brain: Medullary striae of fourth ventricle Rhomboid fossa (striae medullares labeled at center left) Latin striae medullares ventriculi quarti Gray s …   Wikipedia

  • Velum — The term, velum, derived from Latin velum , meaning a sail , curtain, awning or veil , has several quite separate meanings in biology:* the locomotory and feeding organ provided with cilia found in the larval stage called the veliger or velum… …   Wikipedia

  • Superior olivary complex — For the cerebellar structure, see Dentate nucleus. Brain: Superior olivary complex Scheme showing the course of the fibers of the lemniscus; medial lemniscus in blue, lateral in red. (Superior olivary nucleus is labeled at center ri …   Wikipedia

  • Superior vestibular nucleus — Brain: Superior vestibular nucleus Terminal nuclei of the vestibular nerve, with their upper connections. (#7 is Nucleus of Bechterew.) Latin nucleus vestibularis superior Gray s …   Wikipedia

  • medullary velum superior — v. medullare superius …   Medical dictionary

  • velum — 1. Any structure resembling a veil or curtain. SYN: veil (1), velamen, velamentum. 2. SYN: caul (1). 3. SYN: greater omentum. 4. Any serous membrane or membranous envelope or covering. [L …   Medical dictionary

  • Superior cerebellar artery — Infobox Artery Name = PAGENAME Latin = arteria superior cerebelli GraySubject = 148 GrayPage = 580 Width = 250 Caption = The three major arteries of the cerebellum: the SCA, AICA, and PICA. Width2 = 335 Caption2= The arterial circle and arteries… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”