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Chapter 22: The Nervous and Endocrine Systems

Difficulty Level: At Grade Created by: CK-12

A spider web? Some sort of exotic bacteria? Maybe an illustration of a new species of jellyfish. This is actually a nerve cell, the cell of the nervous system. This cell sends electrical “sparks” that transmit signals throughout your body. In this chapter, you will learn more about nerve cells such as this one and their impressive abilities.

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