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1.2: Introduction to Nervous System

Difficulty Level: At Grade Created by: CK-12
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  1. Thinking about the Nervous System
  2. A Closer look at the Brain
  3. Neurons: The Building Blocks of the Nervous System
  4. Reflexes: Neurons in Action
  5. Sensation
  6. Moving Muscles
  7. Maintaining a Healthy Nervous System
  8. Glossary


H. Craig Heller, Principal Investigator

Mary L. Kiely, Project Director

Text Authors

James V. Lawry, H. Craig Heller

Activity Authors

James V. Lawry, H. Craig Heller, Stan Ogren, Geraldine Horsma, Marjorie Gray

Project Editor

Dennis McKee


  • The Brain: An Introduction to Neuroscience Primer, 2nd ed. by Richard F. Thompson. © 1985, 1993 by W. H. Freeman and Company. Used with permission.
  • The Body Book by Sarah B. Stein, copyright © 1992 by Sara B. Stein. Used by permission of Workman Publishing Co., Inc., New York. All Rights Reserved.
  • Exploring the Brain, National Foundation for Brain Research, 1992. Used with permissions.

Photo Credits

  • 1 (rop center): National Aeronautics and Space Administration
  • 11 (top center): Medical Illustration SBHS/Tony Stone Images
  • 13 (bottom): H. Craig Heller
  • 14 (top left): Richard T. Nowitz/Phototake
  • 14 (top right): Richard T. Nowitz/Phototake
  • 14 (middle): CNRI/Science Photo Library/Photo Researchers, Inc.
  • 25 (top center): Spike Walker/Tony Stone Images
  • 26 (top left): John D. Cunningham/Visuals Unlimited
  • 26 (middle left): Cabisco/Visuals Unlimited
  • 31 (top center): William Albert Allard/National Geographic Society
  • 37 (center): Greg Hodson/Visuals Unlimited
  • 39 (top center): Ben Gibson/Tony Stone Images
  • 52 (top center): Lori Adamski Peek/Tony Stone Images
  • 59 (top center): Pete Saloutos/The Stock Market
  • 63 (top center): Photo Researchers, Inc.
  • 63 (bottom center): CEA-Orsay/CNRI/Science Photo Library/Photo Researchers, Inc.
  • 64 (center): Dr. E. Walker/Science Photo Library/Photo Researchers, Inc.

Originally Published by Everyday Learning Corporation

Everyday Learning Development Staff


Steve Mico, Leslie Morrison, Susan Zeitner


Fran Brown, Annette Davis, Jess Schaal, Norma Underwood

ISBN 1-57039-681-7

Stanford University's Middle Grades Life Science Curriculum Project was supported by grants from the National Science Foundation, Carnegie Corporation of New York, and The David and Lucile Packard Foundation. The content of the Human Biology curriculum is the sole responsibility of Stanford University's Middle Grades Life Science Curriculum Project and does not necessarily reflect the views or opinions of the National Science Foundation, Carnegie Corporation of New York, or The David and Lucile Packard Foundation.

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Date Created:
Feb 27, 2012
Last Modified:
Jan 30, 2016
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