Histology of Nervous System Flashcards Preview

Block 5 > Histology of Nervous System > Flashcards

Flashcards in Histology of Nervous System Deck (8):
1

What are the three layers of the cerebral cortex?

Outer hypocellular molecular layer
Middle purkinje layer
Inner densely populated granular cell layer

2

What are the types of glial cells?

Oligodendrocytes
Astrocytes
Microglia
Ependymal

3

What is the appearance of astrocytes?

'star cells' round oval nuclei with evenly dispersed pale chromatin with foot processes often in contact with a blood vessel

4

What is the role of astrocytes?

Provide physical and metabolic support to cells of the CNS

5

What is the appearance of oligodendrocytes?

Small round nucleus with dense homogenous chromatin. Few short cytoplasmic processes which wrap around axons of neurons to form myelin

6

What is the role of oligodendrocytes?

Insulation to axons (equivalent to schwann cells in PNS) - create the myelin sheath

7

What is the role of ependymal cells?

Lines the ventricles of the brain and central canal of spinal cord and produces CSF

8

What is the role of microglia?

macrophage of the CNS