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Habenular trigone

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Brain: Habenular trigone
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[[Image:|250px|center|]]
Latin trigonum habenulae
Gray's subject #189 812
Part of
Components
Artery
Vein
BrainInfo/UW hier-276
MeSH [1]

The habenular trigone is a small depressed triangular area situated in front of the superior colliculus and on the lateral aspect of the posterior part of the taenia thalami.

It contains a group of nerve cells termed the ganglion habenulæ.

Fibers enter it from the stalk of the pineal body, and others, forming what is termed the habenular commissure, pass across the middle line to the corresponding ganglion of the opposite side.

Most of its fibers are, however, directed downward and form a bundle, the fasciculus retroflexus of Meynert, which passes medial to the red nucleus, and, after decussating with the corresponding fasciculus of the opposite side, ends in the interpeduncular ganglion.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.


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