Neuroglia, Myelin Sheath Formation, Propagation on AP

What do neuroglial cells do?

• provide structural support for neurons

• provide protection for neurons

• maintain neurons environment

• help transport messages from brain to body

What are the 4 types of neuroglia in the CNS?

• Astrocytes, Oligodendrocytes, microglia, ependymal cells

• Schwann cells, satellite cells, astrocytes, microglia

• Schwann cells, satellite cells

• keratinocytes, melanocytes, astrocytes, basal cells

What are the 2 types of neuroglia in the PNS?

• Oligodendrocytes, ependymal cells

• Schwann cells, microglia

• Schwann cells, satellite cells

• astrocytes, basal cells

What are the functions of Astrocytes? (CNS)

• Anchor neurons and blood vessels in place

• transport nutrients and gasses between blood vessels and neurons

• formation of blood-brain barrier

• repair damaged brain tissue

• created myelin sheath

What is the function of Oligodendrocytes? (CNS)

• wrap around axons of neurons to form myelin

• ingest disease-causing microorganisms, dead neurons, and cellular debris

• Repair damaged tissue

• form cerebrospinal fluid

What do microglia cells do and how are they activated? (CNS)

• Activated by injury

• Activated by change in cerebrospinal fluid levels

• ingest disease-causing microorganisms, dead neuron, and cell debris

• form cerebrospinal fluid

Tags

NGSS.HS-LS2-3

What do ependymal cells do and where are they located? (CNS)

• form cerebrospinal fluid

• line central canal of spinal cord and brain ventricles

• line the skull

• form blood for blood-brain barrier

What do Schwann cells do? (PNS)

• form myelin sheath in PNS

• form myelin sheath in CNS

• form node of Ranvier

• form cell body of axons

What do Satellite cells do and where are they located? (PNS)

• surround neuronal cells bodies in peripheral ganglia

• provide structural support of neurons in PNS ganglia

• surround axon terminal

• provide support for functions of NMJ

What two cells makeup myelin sheath in both the CNS & PNS?

Hint: put CNS cell first followed by & symbol

(a)