What are the three types of macroglial cells in the CNS? a) Oligodendrocytes, Schwann cells, and astrocytes. b) Microglia, oligodendrocytes, and ...

The answer is b), microglia, oligodendrocytes, and astrocytes.

The central nervous system (CNS) is made up of neurons and glial cells. Glial cells are non-neuronal cells that support neurons and help to maintain the function of the CNS. There are three main types of glial cells in the CNS: microglia, oligodendrocytes, and astrocytes.

• Microglia: Microglia are immune cells that protect the CNS from infection and damage. They are the only glial cells that are phagocytic, meaning that they can engulf and destroy foreign material.
• Oligodendrocytes: Oligodendrocytes are glial cells that produce myelin, the fatty sheath that insulates axons and increases the speed of nerve conduction. They are found only in the CNS.
• Astrocytes: Astrocytes are the most abundant type of glial cell in the CNS. They have a variety of functions, including:
• Providing structural support for neurons
• Maintaining the extracellular environment around neurons
• Clearing cellular debris
• Inducing the formation of the blood-brain barrier
• Regulating the immune response in the CNS

Microglia, oligodendrocytes, and astrocytes are essential for the proper functioning of the CNS. They play a variety of roles in supporting neurons, maintaining the extracellular environment, and protecting the CNS from damage.

The correct answer is b), microglia, oligodendrocytes, and astrocytes.

Here is a table of the three types of macroglial cells in the CNS:

Type of macroglial cellFunctionMicrogliaImmune cells that protect the CNS from infection and damage. They are the only glial cells that are phagocytic, meaning that they can engulf and destroy foreign material.OligodendrocytesGlial cells that produce myelin, the fatty sheath that insulates axons and increases the speed of nerve conduction. They are found only in the CNS.AstrocytesThe most abundant type of glial cell in the CNS. They have a variety of functions, including:

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* Providing structural support for neurons
* Maintaining the extracellular environment around neurons
* Clearing cellular debris
* Inducing the formation of the blood-brain barrier
* Regulating the immune response in the CNS |

Schwann cells are not macroglial cells. They are glial cells that are found in the peripheral nervous system (PNS). They are responsible for producing myelin in the PNS.