An Axon Is

question 13

Multiple Choice

An axon is

• A) a cell that serves as the basic building block of the nervous system.
• B) a layer of fatty tissue that encases the fibers of many neurons.
• C) a molecule that blocks neurotransmitter receptor sites.
• D) the extension of a neuron that carries messages away from the cell body.

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Definitions:

Contribution Margin

The amount by which the sale of a product or service exceeds its variable costs, contributing to covering fixed costs and generating profit.