The Cells That Cover the Outer Surfaces of CNS Capillary

question 146

Multiple Choice

The cells that cover the outer surfaces of CNS capillary endothelial cells are the

• A)blastocytes.
• B)astrocytes.
• C)monocytes.
• D)leukocytes.
• E)lymphocytes.

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Definitions:

Myelination

The process of forming a myelin sheath around neurons, improving the speed and efficiency of electrical signal transmission in the nervous system.

Schwann Cells

A type of glial cell that myelinates the axons of the peripheral nervous system, enabling fast electrical impulses.

Nodes Of Ranvier

Gaps in the myelin sheath of axons that facilitate rapid signal transmission via saltatory conduction.

Hyperpolarization

A change in a cell's membrane potential, making it more negative, and thus further from initiating an action potential.