Glial cells are established as essential for many functions of the central nervous system, and
this seems to hold also for glial cells in the peripheral nervous system. The main type of glial
cells in most types of peripheral ganglia–sensory, sympathetic, and parasympathetic–is
satellite glial cells (SGCs). These cells usually form envelopes around single neurons, which
create a distinct functional unit consisting of a neuron and its attending SGCs. This review
presents the knowledge on the morphology of SGCs in sympathetic and parasympathetic …