What Is the Myelin Sheath

question 46

Multiple Choice

What is the myelin sheath?

• A) The basic unit of the nervous system.
• B) The innermost layer of the protective covering of the CNS.
• C) A fatty insulation covering of the axon.
• D) A long, threadlike extension of the nerve cell.

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Definitions:

Virtual Private Network

A technology that creates a safe and encrypted connection over a less secure network, such as the internet.

Wide Area Network

A Wide Area Network (WAN) is a telecommunications network that extends over a large geographical area, connecting computers and smaller networks to each other.

Extranet

A private network that uses Internet protocols and the public telecommunication system to securely share part of a business's information or operations with suppliers, vendors, partners, customers, or other businesses.

Virtual Network

Common type of technology infrastructure, which consists of links that are not wired connections.