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Home › Body Atlas › Brain & Spinal Cord › Pontine Nuclei
Brain Structure Head & Skull

Pontine Nuclei

nuclei pontis

The pontine nuclei are millions of neurons scattered in the front (basilar) part of the pons. They receive input from the cerebral cortex and pass it across to the opposite half of the cerebellum.

Anatomical Data

Structure & Connections

LocationBasilar pons, among the descending corticospinal fibres
Parts
  • Scattered nuclei
  • Transverse pontine fibres
Connections
Blood SupplyBasilar artery (pontine branches)
Biomechanics

Function & Actions

Relay plans for movement from the cortex to the cerebellum, a key step in coordinating skilled movements.

Clinical Relevance

Clinical Notes

Strokes of the basilar pons can damage these nuclei, causing incoordination (ataxic hemiparesis). They degenerate in some inherited ataxias and multiple system atrophy, seen as a "hot cross bun" sign on MRI.

Pathology

Common Injuries & Conditions

Ataxic Hemiparesis

Weakness with incoordination on one side from a small pontine stroke.

Multiple System Atrophy

Degenerative disease with loss of pontine neurons and crossing fibres.

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