The Difference Between Myelinated and Unmyelinated Axons in the PNS

question 63

Multiple Choice

The difference between myelinated and unmyelinated axons in the PNS is that

• A) Schwann cells are not associated with unmyelinated axons.
• B) Schwann cells form more widely spaced nodes of Ranvier in unmyelinated axons.
• C) Schwann cells simultaneously surround multiple axons in myelinated axons.
• D) Schwann cells wrap around myelinated axons in concentric layers.

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Definitions:

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The process by which a stimulus or event strengthens or increases the probability of the response that it follows.

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Any event or situation that evokes a response.