Topics

Topic

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Lunogranicile fissure of cerebellum

The lunogracile fissure of the cerebellum is a posterior hemispheric fissure that separates Lobule VIIB from Crus II of the ansiform lobule. It is one of the key fissures used to identify the transition zone between the paravermian lobule VIIB and the lateral hemisphere’s Crus II.

Location

Superior to the fissure: Lobulus VIIB hemisphaerii cerebelli
Inferior to the fissure: Crus II (part of the ansiform lobule)
Found on the posterior surface of the cerebellar hemisphere, running horizontally or slightly obliquely.

Anatomical Context

Lobule VIIB is part of the posterior quadrangular lobule, a medial-to-intermediate region involved in higher-level motor coordination and cognitive–motor integration.
Crus II lies within the ansiform lobule, a major lateral hemisphere structure heavily associated with complex motor planning, working memory, and cognitive cerebellar functions.

MRI images