Module 1 Section 3

What is the function of neuroglial cells?

Neuroglial cells are support cells, helping to support neurons to enable them to thrive in their needed environment.

What are the peripheral nervous system neuroglial cell types?

Schwann cells; satellite cells

List the four types of support neuroglial cells in the central system and a function of each.

Ependymal cells circulate cerebrospinal fluid and allow fluid exchange between brain, spinal cord and cerebrospinal fluid (CSF). Oligodendrocytes act as the insulation for central nervous system axons. Astrocytes control chemical environment of neurons by wrapping around the blood capillaries, forming the blood brain barrier. Microglial cells protect the CNS by scavenging dead cells and infectious microorganisms.

True or False: Axons cannot regenerate in the peripheral nervous system.

False

True or False: Myelin sheath is continuous and has no gaps.

False