Transcript Nervous System Notes - Mrs. Franco's Biology & Anatomy Page

Neuroglia Notes
NEUROGLIA
 Glia means “glue”
 Act in support, guiding
development, and stimulation and
maintenance
TYPES OF NEUROGLIA IN CNS
 Astrocytes – star shaped cells
with many processes
 hold neurons close to blood
vessels
 help form the blood-brain barrier
 Oligodendrocyte
 most
common
 form the myelin sheath for
neurons of CNS
 Microglia – small, have fewer
processes, and are phagocytes
 protect the CNS by phagocytizing
microbes and clearing away
debris from inflammation and
tissue damage
 Ependymal cells
 form
the cerebrospinal fluid
(CSF) and also assist in its
circulation
NEUROGLIA OF PNS
 Schwann cells
 supply
myelin sheathes to
axons in the PNS
 Also aids in the regrowth of
damaged peripheral axons
 Satellite cells
 flattened
cells found around cell
bodies of neurons in ganglia
 Ganglia = bunched up cell
bodies in PNS