Neuroglia (Glial Cells)
What is the structural characteristics of neurolemmocytes?
flattened cells wrapped around a portion of an axon in the PNS.
What is the function of ependymal cells?
form a simple epithelium, and lines ventricles of CNS- production and circulation of cerebral spinal fluid.
What is the function of satellite cells?
protects and regulates nutrients for cell bodies in ganglia. It also surrounds the ganglia (cell body)
What is the function of microglial cells?
Defend against pathogens, remove debris, and they are immune cells (wander).
What is the function of oligodendrocytes?
They myelinate and insulates CNS axons. It also allows for faster nerve impulse conduction through the axon, and it produces myelin.
What is the function of neurolemmocytes?
They produce myelin. It myelinates and insulates PNS axons. It allows for faster nerve impulse conduction through the axon.
What is the structural characteristics of Ependymal cells?
simple cuboidal epithelial cell lining cavities in the brain and spinal cord, and has cilia on apical surface.
What are the six glial cells?
Astrocytes, microglial cells, ependymal cells, oligodendrocytes, satellite cells, and neurolemmocytes.
Is astrocytes located in the PNS or CNS?
CNS
Is ependymal cells located in the PNS or CNS?
CNS
Is microglial cells located in the PNS or CNS?
CNS
Is oligodendrocytes located in the PNS or CNS?
CNS
What is the structural characteristics of satellite cells?
Flattened cell clustered around neuronal cell bodies in ganglia.
Do glial cells send action potential?
No
Is neurolemmocytes located in the PNS or CNS?
PNS
Is satellite cells located in the PNS or CNS?
PNS
What is the structural characteristics of oligodendrocytes?
Rounded, bulbous cells with slender cytoplasmic extensions. The extensions wrap around CNS axons.
What is the structural characteristics of astrocytes?
They are large cells with numerous cells processes. They are the most common type of glial cells
What is the structural characteristics of microglial cells?
They are small cells with slender branches. They are also the least common type of glial cell.
What are glial cells?
They are the supporting cells of the nervous system
What is the function of astrocytes?
They form the blood-brain barrier, regulate tissue fluid composition, provide structural support and organization to the CNS, replace damage neurons, and help regulate synaptic transmission.
