Neuroglia

Neuroglia

By Andrew Nelson

Objectives

• State the functions of neuroglia in the CNS

• Distinguish between types of neuroglia in the CNS

• Describe Schwann cells of the PNS​

Open Ended

What does the prefix neuro- mean?

• ​Neuro means....?

• What does glia mean?

• More neuroglia than neurons in CNS!​

• ​There are two main categories

1. Microglia

2. Macroglia​

Neuroglia

​

Open Ended

What is a great superhero name for neuroglia?

• ​Scattered throughout the CNS

• Phagocytes: Remove cellular debris and bacterial cells​

Microglia

• Align along axon

• Insulating layer called myelin sheath​ (CNS)

​​Oligodendrocytes

​

• Structural support

• Regulate nutrient concentration in tissues

• Fills injuries in CNS with scar tissue

​​Astrocytes

​

• Membrane that covers parts of brain

• Inner lining of brain and spinal chord​

​​Ependymal Cells

​

Multiple Choice

This cell type is specially made to take care of cellular waste and debris

• Oligodendrocytes

• Astrocytes

• Ependymal Cells

• Microglia

Multiple Choice

Which cell type provides structure to nervous tissue?

• Ependymal Cells

• Oligodendrocytes

• Astrocytes

• Microglia

• Create the myelin sheath around the axons of neurons in the PNS ​

• ​The PNS neurons are also surrounded by satellite cells to increase safety and regulate environment

​Schwann Cells

Poll

State the functions of neuroglia in the CNS

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• 2

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• 4

Poll

S

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• 2

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• 4

Poll

Describe Schwann cells of the PNS​

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• 3

• 4