Quiz on Glial Cells and Nervous System

What are the two cellular components of nervous tissue?

• Neurons and Glial Cells

• Astrocytes and Oligodendrocytes

• Neurons and Astrocytes

• Microglia and Schwann Cells

Where are astrocytes found in the nervous system?

• Both in the Central and Peripheral Nervous System

• Only in the Central Nervous System

• Only in the Peripheral Nervous System

• Only in the Autonomic Nervous System

What is the main function of the blood-brain barrier?

• To allow all molecules to freely pass into the nervous tissue

• To prevent the passage of all molecules into the nervous tissue

• To selectively control the movement of molecules into the nervous tissue

• To regulate the body temperature

Which cells myelinate axons in the central nervous system?

• Schwann Cells

• Astrocytes

• Microglia

• Oligodendrocytes

What happens when there is damage to oligodendrocytes in the central nervous system?

• The axons undergo demyelination and cannot be regenerated

• The axons regenerate without myelination

• The axons are remyelinated by astrocytes

• The axons remain unaffected

Where are satellite cells found in the nervous system?

• In the Synaptic Cleft

• In the Axons of Neurons

• Only in the Central Nervous System

• Surrounding the cell bodies of the dorsal root ganglion and autonomic ganglia

What is the function of astrocytes in controlling potassium levels?

• They store excess potassium in the neurons

• They push potassium out of the neurons

• They mop up excess potassium to prevent increased excitability of neurons

• They convert potassium into glucose

How do astrocytes contribute to the blood-brain barrier?

• They increase the permeability of the blood-brain barrier

• They secrete growth factors to stimulate endothelial cells

• They break down the blood-brain barrier

• They have no role in the blood-brain barrier

What is the main function of oligodendrocytes and Schwann cells?

• To regulate body temperature

• To control glucose metabolism

• To secrete neurotransmitters

• To myelinate axons in the nervous system

Where are Schwann cells found in the nervous system?

• Only in the Central Nervous System

• In the Synaptic Cleft

• Surrounding the cell bodies of the dorsal root ganglion and autonomic ganglia

• In the Axons of Neurons