Horizontal fissure of cerebellum

Horizontal fissure of cerebellum

The Horizontal fissure of cerebellum is a significant anatomical feature of the cerebellum, a part of the brain that plays a vital role in motor control. It is also involved in cognitive functions such as attention and language, and in regulating fear and pleasure responses.

Horizontal fissure of cerebellum visible on a sagittal section of the brain.

Anatomy

The horizontal fissure, also known as the posterolateral fissure, separates the cerebellum into superior and inferior parts. It wraps around the lateral and posterior aspects of the cerebellum, dividing it into an upper, larger part, the cerebellar hemispheres, and a lower, smaller part, the vermis.

Function

The horizontal fissure of the cerebellum, like other brain fissures, serves to increase the surface area of the brain, allowing for increased neural processing. It does not have a specific function beyond this structural role.

Clinical significance

Abnormalities or damage to the horizontal fissure of the cerebellum can lead to a variety of neurological conditions. These can include ataxia, a lack of muscle control or coordination of voluntary movements, and dysarthria, a motor speech disorder resulting from neurological injury.

See also

• Cerebellum
• Brain fissure
• Ataxia
• Dysarthria

External links

• Anatomy Atlases - Anatomic Variants