Cerebellum

The cerebellum is, after the brain, the largest portion of the brain. Occupies the posterior cranial fossa and is located below the occipital lobes of the brain, which is separated by a structure called the tentorium. It consists of two hemispheres and cerebellar vermis called an intermediate portion. Brainstem joins with three pairs of cerebellar peduncles; these stems are bundles of fibers that enter and leave the cerebellum, on whose surface are numerous surface grooves close to each other.

A sagittal cerebellar sample outside the cerebellum (in the cerebellar cortex) is the gray matter, and inside white substance. In the deep cerebellar nuclei are jagged. The fourth ventricle occupies a location immediately prior to the cerebellum.

Microscopic Appearance

Cerebellar cortex is divided into an outer layer, or molecular, and an inner layer, or grainy. Between the two layers are cells called Purkinje cells. Although the cells of the two layers cortical cerebellar are small, thus no longer neurons. This is also the glia.

Function of the cerebellum

The cerebellum plays a regulatory role in the coordination of muscle activity, maintaining muscle tone and balance conservation. The cerebellum needs to be constantly informed of what needs to be done to coordinate muscle activity satisfactorily. To this end receives information from the different parts of the organism. On one hand, the cerebral cortex sends a number of fibers that enable cooperation between the structures. On the other hand, receives information from the muscles and joints which continuously indicate position. Finally, receives impulses from the inner ear that keep you informed about the position and movements of the head. The cerebellum thus necessary for this information to carry out the functions of its own.