Primary fissure
Fissura prima
- Latin synonym: Fissura preclivalis; Fissura praeclivalis
 - Synonym: Preclival fissure
 - Related terms: Primary fissure; Preclival fissure
 
Definition
The primary fissure divided the monticulus of the cerebellum into an anterior, raised part, the culmen or summit, and a posterior sloped part, the clivus; the quadrangular lobule is similarly divided.
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