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Posterior horn of lateral ventricle

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Brain: Occipital horn of lateral ventricle
Gray735
Drawing of a cast of the ventricular cavities, viewed from above.
Gray736
Drawing of a cast of the ventricular cavities, viewed from the side.
Latin cornu posterius
Gray's subject #189 829
Part of
Components
Artery
Vein
BrainInfo/UW hier-205
MeSH [1]

The occipital horn of the lateral ventricle posteriorly (also posterior cornu of the lateral ventricle, postcornu of the lateral ventricle) passes into the occipital lobe, its direction being backward and lateralward, and then medialward.

Its roof is formed by the fibers of the corpus callosum passing to the temporal and occipital lobes.

On its medial wall is a longitudinal eminence, the calcar avis (hippocampus minor), which is an involution of the ventricular wall produced by the calcarine fissure.

Above this the forceps posterior of the corpus callosum, sweeping around to enter the occipital lobe, causes another projection, termed the bulb of the posterior cornu.

The calcar avis and bulb of the posterior cornu are extremely variable in their degree of development; in some cases they are ill-defined, in others prominent.

Additional imagesEdit

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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 As such, some of the information contained herein may be outdated.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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