Superior cerebellar peduncle

Brain: Superior cerebellar peduncle
Sagittal section of the cerebellum, near the junction of the vermis with the hemisphere. (Superior peduncle labeled at upper right.)
Dissection showing the projection fibers of the cerebellum. (Superior peduncle labeled at center top.)
Latin	pedunculus cerebellaris superior
Gray's	subject #187 792
NeuroNames	ancil-1289712953
NeuroLex ID	birnlex_1711

The superior cerebellar peduncles (brachia conjunctiva), two in number, emerge from the upper and medial part of the white substance of the hemispheres and are placed under cover of the upper part of the cerebellum.

They are joined to each other across the middle line by the anterior medullary velum, and can be followed upward as far as the inferior colliculi, under which they disappear.

Below, they form the upper lateral boundaries of the fourth ventricle, but as they ascend they converge on the dorsal aspect of the ventricle and thus assist in roofing it in.

All fibers (except vestibular fibers to the vestibular nuclei through the inferior cerebellar peduncle) carrying information from the cerebellum to the midbrain pass through the superior cerebellar peduncle.

Additional images

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  Scheme showing the connections of the several parts of the brain.

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  Superficial dissection of brain-stem. Lateral view.

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  Dissection of brain-stem. Lateral view.

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  Deep dissection of brain-stem. Lateral view.

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  Deep dissection of brain-stem. Lateral view.

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  Deep dissection of brain-stem. Ventral view.

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  Coronal section of the pons, at its upper part.

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  Sagittal section through right cerebellar hemisphere. The right olive has also been cut sagitally.

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  Hind- and mid-brains; postero-lateral view.

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  Dissection showing the course of the cerebrospinal fibers.

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  Upper part of medulla spinalis and hind- and mid-brains; posterior aspect, exposed in situ.

External links

• Atlas of anatomy at UMich n2a7p6
• Atlas of anatomy at UMich n2a7p4

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.