Arbor vitae ("tree of life") is the branching pattern of white matter seen when the cerebellum is cut in half, with grey cortex covering each branch like leaves.
| Location | Core of the cerebellum, especially visible in the vermis on a midline section |
|---|---|
| Parts |
|
| Connections |
|
| Blood Supply | Superior cerebellar artery; Anterior inferior cerebellar artery; Posterior inferior cerebellar artery |
Carries fibres into and out of the cerebellar cortex.
Its pattern is easily seen on sagittal MRI, where thinning of the folia indicates cerebellar atrophy. Some metabolic and inherited diseases cause visible white matter changes here.
Shrinkage of the cerebellum with widened spaces between folia on MRI.
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