Middle cerebellar peduncle

Middle cerebellar peduncle
Brain: Middle cerebellar peduncle
Gray705.png
Dissection showing the projection fibers of the cerebellum. (Middle peduncle labeled at upper right.)
Latin pedunculus cerebellaris medius
NeuroNames hier-616
NeuroLex ID birnlex_1529

The middle cerebellar peduncles (brachia pontis) are composed entirely of centripetal fibers, which arise from the cells of the nuclei pontis of the opposite side and end in the cerebellar cortex; the fibers are arranged in three fasciculi, superior, inferior, and deep.

  • The superior fasciculus, the most superficial, is derived from the upper transverse fibers of the pons; it is directed backward and lateralward superficial to the other two fasciculi, and is distributed mainly to the lobules on the inferior surface of the cerebellar hemisphere and to the parts of the superior surface adjoining the posterior and lateral margins.
  • The inferior fasciculus is formed by the lowest transverse fibers of the pons; it passes under cover of the superior fasciculus and is continued downward and backward more or less parallel with it, to be distributed to the folia on the under surface close to the vermis.
  • The deep fasciculus comprises most of the deep transverse fibers of the pons. It is at first covered by the superior and inferior fasciculi, but crosses obliquely and appears on the medial side of the superior, from which it receives a bundle; its fibers spread out and pass to the upper anterior cerebellar folia. The fibers of this fasciculus cover those of the restiform body.

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 As such, some of the information contained within it may be outdated.



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  • Cerebellar peduncle — may refer to: Superior cerebellar peduncle Middle cerebellar peduncle Inferior cerebellar peduncle This disambiguation page lists articles associated with the same title. If an intern …   Wikipedia

  • fasciculus of middle cerebellar peduncle inferior — the most caudal portion of the transverse fibers of the pons, connecting pontine nuclei with the cerebellar folia near the vermis …   Medical dictionary

  • Middle cerebellar peduncles — Infobox Brain Name = PAGENAME Latin = p. cerebellaris medius GraySubject = GrayPage = Caption = Dissection showing the projection fibers of the cerebellum. (Middle peduncle labeled at upper right.) Caption2 = IsPartOf = Components = Artery = Vein …   Wikipedia

  • fasciculus of middle cerebellar peduncle deep — the most dorsal part of the transverse fibers of the pons, connecting pontine nuclei with the folia on the anterior superior surface of the cerebellum …   Medical dictionary

  • fasciculus of middle cerebellar peduncle superior — the most rostral portion of the transverse fibers of the pons, connecting pontine nuclei with inferior lobules and posterior and lateral margins of the cerebellum …   Medical dictionary

  • Inferior cerebellar peduncle — Infobox Brain Name = PAGENAME Latin = pedunculus cerebellaris inferior GraySubject = 187 GrayPage = 775 Caption = Scheme showing the connections of the several parts of the brain. (Inferior peduncle labeled at bottom right.) Caption2 = Section of …   Wikipedia

  • peduncle — 1. In neuroanatomy, term loosely applied to a variety of stalklike connecting structures in the brain, composed either exclusively of white matter ( e.g., cerebellar p.) or of white and gray matter ( e.g., cerebral p …   Medical dictionary

  • peduncle — n. a narrow process or stalklike structure, serving as a support or a connection. For example, the middle cerebellar peduncle connects the pons and cerebellum …   The new mediacal dictionary

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