The cellular components are the ones that form the internal structure of the cerebellum and the base of all the functions carried out by this part of the human organism. Analyzing the most important components of the cerebellum in terms of the cells will lead to the understanding of the functions taken up. It is important to know that these cells are the smallest parts of the cerebellum and that they are the ones to dictate all the actions of the small brain. The connection between the cells is done through a lined pathway as follows: mossy fiber, granule cells, parallel fibers, Purkinje cells and deep nuclei.
The mossy fibers are the ones to start up the processes in the cerebellum, due to the fact that they are the ones to create a sort of excitatory synapses, alongside with the granule cells. Through this action, the entire functionality of the cerebellum is started in the proper way and is ensured for the whole activity. The granule cells, which are also a part of the initial processing, are the smallest neurons in the cerebellum, but also the most numerous ones. These cells emit dendrites, which form enlargements together, called dendritic claws. The Purkinje cells are the earliest discoveries in the functionality of the cerebellum. They are also easily distinctive from the other neurons, due to the fact that they have a specific form for the dendritic tree. The deep nuclei are the ones through which the outputs are sent. They are formations of gray matter.
The importance of each of these components is major in the correct functionality of the cerebellum. With each new type of cell, a particular part of the cerebellum functions is taken up and the chain of reactions is carried out until the moment of the output result. All the cells have a specific purpose in the processes carried out by the cerebellum and must be in full and proper function for the perfect realization of all the typical functions. Studies carried on these are based on their particular characteristics and on the way in which they are connected.