What divides the cerebellum into superior and inferior parts?

The horizontal fissure is the structure that divides the cerebellum into superior and inferior parts. This fissure runs horizontally across the cerebellum, effectively separating the cerebellar hemispheres into upper (superior) and lower (inferior) sections. The significance of the horizontal fissure lies in its functional implications; the upper part of the cerebellum is primarily involved with the coordination of movement and balance, while the lower part plays a critical role in the processing of sensory information and fine motor control. Understanding the role of this fissure helps clarify how the cerebellum manages its various functions and how they are distinctly organized within its anatomical structure.