UNIT 01

THE NEURON

NEURONS (NERVE CELLS) are specialized cells in the nervous system. These microscopic cells are like little batteries because they are able to generate small amounts of electricity. To communicate with other nerve cells, muscles, or glands, neurons send electrical signals over short and long distances. Each part of a neuron has a special function to ensure that these messages are sent quickly and efficiently.

Most people have never seen a real neuron. Scientists must use microscopes to see neurons because these cells are so small. Drawings and photographs of neurons help other people understand the structure of these cells. Another way to understand what a neuron looks like is to build a model of one and hold it in your hand. ...

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