1- Cells of the Nervous System

Question 1

Golgi Staining

Answer 1

Potassium dichromate and silver nitrate used

Neurons and glia take up silver grains

Question 2

Neuron Filling

Answer 2

Can trace patterns of neurons

i.e. GFP dye packaged into vesicles, into synapse

Question 3

Glial Cells

Answer 3

Supports neurons

Not electrically excitable

1:1 ratio between glial cells and neurons

Question 4

Schwann Cells

Answer 4

PNS

Wrap around individual axons

Important for axon regeneration

Question 5

Oligodendrocytes

Answer 5

In CNS

Surround multiple axons (have several processes)

Question 6

Astrocytes

Answer 6

Most abundant glial cell in CNS

Mechanical support of neurons- anchors to blood capillaries

Metabolic support (glycogen)

Regulation of molecules in extracellular fluid

Can have inflammatory response after injury

Question 7

Microglia

Answer 7

Smallest glial cell

Immune cell of the brain

Activated by inflammation (transformed to macrophage which is phagocytic)

Question 8

Ependymal Cells

Answer 8

Line ventricular system

Produce CSF

Responsible for making stem cells

Question 9

Choroid Plexus

Answer 9

Specialized epndyma that produces CSF