Histology of nervous tissue

=Objectives=

Name the seven principle cell types of the nervous system

 * 1) Neurons
 * PNS: schwann cells
 * PNS: satelite cells
 * CNS: astrocytes
 * CNS: oligodendrocytes
 * CNS: microglial: derived from mononuclear phagocyte system (hematopoetic origin)
 * CNS: epididymal cells: low columnar epithelial cells lining the ventricles of the brain; often cilliated to move CSF