Anterior commissure
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| Brain: Anterior commissure | ||
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| Coronal section of brain through anterior commissure. (Label for "anterior commissure" is on left, third from bottom.) | ||
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| Gray's | subject #189 840 | |
| NeuroNames | hier-187 | |
| MeSH | A08.186.211.577.750.800 | |
The Anterior Commissure (precommissure) is a bundle of white fibers, connecting the two cerebral hemispheres across the middle line, and placed in front of the columns of the fornix.
On sagittal section it is oval in shape, its long diameter being vertical and measuring about 5 mm.
Its fibers can be traced lateralward and backward on either side beneath the corpus striatum into the substance of the temporal lobe.
It serves in this way to connect the two temporal lobes, but it also contains decussating fibers from the olfactory tracts.
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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 As such, some of the information contained herein may be outdated.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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