Flashcards in W19/L2: Cells of the CNS Deck (18):
Why is grey matter grey?
It contains cell bodies
Why is white matter white?
It has lots of myelin
What is the cortex?
A 1cm thick region covering the brain
How many layers are there in the cortex and what are they due to?
6 layers caused by differences in densities of the cell types in each
What structure forms the CSF?
The choroid plexus
Describe the ependymal cells
Low columnar or cuboidal cells, sometimes with cilia on their apical surface.
Where are the ependymal cells found?
Lining the ventricles and central canal of the spinal cord
What are the Nissl bodies?
RER + free ribosomes
Neurons need to make lots of protein. How is this evdienced in histology?
Large pale nucleus
What are the glial cells?
Which cells help form the BBB?
Which cells are responsible for myelination?
Oligodendrocytes & Schwann cells
Oligodendrocytes vs Schwann cells: Which is in the CNS?
Oligodendrocytes vs Schwann cells: Which is in the PNS?
Oligodendrocytes vs Schwann cells: Which can wrap multiple axons?
Oligodendrocytes vs Schwann cells: Which can only wrap one axon?
What are the names of the gaps in the myelin sheath?
Nodes of ranvier