Nervous System

A small child darts in front of your bike as you race down the street. You see the child and immediately react. You put on the brakes, steer away from the child, and yell out a warning—all in just a split second. How do you respond so quickly? Such rapid responses are controlled by your nervous system. The nervous system is a complex network of nervous tissue that carries electrical messages throughout the body. To understand how nervous messages can travel so quickly, you need to know more about nerve cells.

In Chapter 17, students will

identify and describe the 3 parts of a nerve cell (neuron)

define an action potential

explain how action potentials create nerve impulses

describe how impulses cross synapses to other nerve cells

list the three types of neurons: sensory, inter, motor

Instructions - complete the following