There are approximately ten times as many glial cells in the nervous system as there are neurons. Collectively, the different types of glial cells perform very important functions in the nervous system. Test your basic knowledge of glial cells by taking this simple quiz.
(1) Along myelinated axons, voltage-gated sodium (Na+) channels are:
(2) Along nonmyelinated axons, voltage-gated sodium (Na+) channels are:
(3) The following are glial cells:
(4) The most abundant glial cells of the nervous system are:
(5) These glial cells are in fact epithelial cells: