| Middle cerebellar peduncle | |
|---|---|
 Dissection showing the projection fibers of the cerebellum. (Middle peduncle labeled at upper right.) | |
| Details | |
| Identifiers | |
| Latin | pedunculus cerebellaris medius |
| MeSH | D065837 |
| NeuroNames | 620 |
| NeuroLex ID | birnlex_1529 |
| TA98 | A14.1.05.003 A14.1.07.416 |
| TA2 | 5848 |
| FMA | 72515 |
| Anatomical terms of neuroanatomy | |
Themiddle cerebellar peduncle (orbrachium pontis[1]) is one of three pairedcerebellar peduncles connecting thebrainstem to thecerebellum. The connection is from thepons. It connects thepons to thecerebellum, withfibres originating from thepontine nuclei, and travelling to the oppositecerebellar hemisphere. It is supplied by theanterior inferior cerebellar artery (AICA) and branches from thebasilar artery. It conveys information from thecerebrum and thepons to thecerebellum.
The middle cerebellar peduncle is the largest of the three cerebellar peduncles. It connects thepons andcerebellum. It consists almost entirely of fibers passing from the pons to the cerebellum (fibrocerebellar fibers); the fibers arise from thepontine nuclei and decussate within the pons before entering the peduncle[1] to end in the contralateralcerebellar hemisphere.[2]
Thetrigeminal nerve (CN V) arises from the lateral pons very close to the middle cerebellar peduncle.[3]
The middle cerebellar peduncle is supplied by theanterior inferior cerebellar artery (AICA), as well as smaller branches from thebasilar artery.[4]
Infarction of theanterior inferior cerebellar artery (AICA) can damage the middle cerebellar peduncle.[4]Diffuse intrinsic pontine glioma may spread from the pons into the middle cerebellar peduncle.[5]
This article incorporates text in thepublic domain from the 20th edition ofGray's Anatomy(1918)
