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1.2: Introduction to Breathing

Difficulty Level: At Grade Created by: CK-12
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  1. Breathing: Why and How?
  2. My Breathing Machine
  3. Oxygen, Carbon Dioxide, and Energy
  4. Breathing Mission Control
  5. How to Keep My Breathing Machine Healthy
  6. Glossary


H. Craig Heller, Principal Investigator

Mary L. Kiely, Project Director

Text Authors

James V. Lawry, H. Craig Heller

Activity Authors

James V. Lawry, Stan Ogren, Marjorie Gray, Geraldine Horsma

Project Editor

Dennis McKee


  • 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.

Photo Credits

  • 1 (top center): Tony Freeman/PhotoEdit
  • 8 (top center): Dennis O'Clair/Tony Stone Images
  • 19 (top center): Bill Aron/PhotoEdit
  • 28 (top center): National Aeronautics and Space Administration (NASA)
  • 32 (bottom center): Paul Conklin/PhotoEdit
  • 33 (top center): AP/Wide World Photos
  • 34 (top center): Dave B. Fleetham/Visuals Unlimited
  • 38 (top center): John Livsey/Tony Stone Images
  • 39 (bottom center): © Biophoto Associates/Photo Researchers, Inc.
  • 43 (top center): CNRI/Science Photo Library (Photo Researchers)
  • 44 (top center): © M. Abbey/Photo Researchers, Inc.
  • 45 (bottom left and right): UPI Photo

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 1-57039-679-5

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 23, 2012
Last Modified:
Jan 30, 2016
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