Neuroanatomy and glial cells come in many types (see, for example, the nervous system section of the list of distinct cell types in the adult human body). Neurons are the information-processing cells of the nervous system: they sense our environment, communicate with each other via electrical signals and chemicals called neurotransmitters across synapses, and produce our memories, thoughts and movements. Glial cells maintain homeostasis, produce myelin, and provide support and protection for the brain's neurons. Some glial cells (astrocytes) can even propagate intercellular calcium waves over long distances in response to stimulation, and release gliotransmitters in response to changes in calcium
Perisynaptic schwann cells research conducted in the past two decades. The origin of Perisynaptic (Terminal) Schwann Cells was largely under question in the 1960s as there were arguments on whether the cells were of epithelial or glial descent, but the development of PSCs has been linked to Neural crest origin. As described above, PSCs are a type of non-myelinating Schwann cell, which develop from neural crest cells. The general series of developmental events can be summarized as this: Neural Crest cells develop into Schwann cell precursors which further develop into Immature Schwann cells which then differentiate into Myelinating Schwann cells and non-Myelinating schwann