Basics of the Nervous System Flashcards
1
Q
Astrocytes are a type of ?
A
Glial cell
2
Q
In the PNS the myelin sheath is formed by what?
A
Schwann cells
3
Q
In the CNS the myelin sheath is formed by what?
A
Oligodendrocytes
4
Q
Bundles of axons within the spinal cord are called what?
A
Tracts
5
Q
White mater is composed of what?
A
Axons (Myelinated)
6
Q
Grey mater consists of what?
A
Cell bodies
7
Q
What are the 3 important layersof the BBB?
A
Tight junction endothelial layer
Thick basal lamina
Foot processes of astrocytes
8
Q
Where is the CSF formed?
A
By the choroid plexus in the ventricles
9
Q
How is CSF absorbed?
A
The arachnoid villi in the subarachnoid space into the venous sagittal sinus
