Human brain the largest cells (by size of cell body) in the nervous system. The adult human brain is estimated to contain 86±8 billion neurons, with a roughly equal number (85±10 billion) of non-neuronal cells. Out of these neurons, 16 billion (19%) are located in the cerebral cortex, and 69 billion (80%) are in the cerebellum. Types of glial cell are astrocytes (including Bergmann glia), oligodendrocytes, ependymal cells (including tanycytes), radial glial cells and microglia. Astrocytes are the largest of the glial cells. They are stellate cells with many processes radiating from their cell bodies. Some of these processes end as perivascular
Satellite glial cell will also be explored in order to determine the effect of these conditions. Additionally, the mechanisms behind neuronal-SGC communication is essentially unidentified, though it is likely that the various receptors both the neurons and SGCs have are used for chemical signaling, perhaps with P2Y. Ca and NO and their effects must also be observed to gain further understanding of interactions between the two types of cells. Finally, the possibility of an influence of SGCs on synaptic transmission within autonomic ganglia provides another direction for future research. Satellite glial cell Satellite glial cells are glial cells that cover the surface of