Glial cells were originally thought to play a very minor role in the nervous system. In fact, their name is derived from the Greek word for glue. However, recent findings have demonstrated a number of functions for these cells. Discuss these functions and their importance in allowing neurons to function. Solution Glial cells are indeed very important for the proper functioning of the nervous system. Their importance becomes apparent from the fact that the central nervous system has more glial cells than neurons. Glial cells of the central nervous system (CNS): In the peripheral nervous system (PNS), only one Schwann cell forms the myelin sheath of only one neuron. Satellite cells are glial cells of the PNS responsible for providing nutrients and structural support to neurons..

1. Glial cells were originally thought to play a very minor role in the nervous system. In fact, their
name is derived from the Greek word for glue. However, recent findings have demonstrated a
number of functions for these cells. Discuss these functions and their importance in allowing
neurons to function.
Solution
Glial cells are indeed very important for the proper functioning of the nervous system. Their
importance becomes apparent from the fact that the central nervous system has more glial cells
than neurons.
Glial cells of the central nervous system (CNS):
In the peripheral nervous system (PNS), only one Schwann cell forms the myelin sheath of only
one neuron. Satellite cells are glial cells of the PNS responsible for providing nutrients and
structural support to neurons.