Ebook Under the microscope: In your Body

Under the Microscope In Your Sabrina Crewe Consultant: Professor Anne K. Camper, Montana State University Copyright © 2010 by Infobase Publishing All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval systems, without permission in writing from the publisher. For information contact: Chelsea Clubhouse An imprint of Chelsea House 132 West 31st Street New York NY 10001 Library of Congress Cataloging-in-Publication Data Crewe, Sabrina. In your body / Sabrina Crewe ; consultant, Professor Anne K. Camper. p. cm. -- (Under the microscope) Includes index. ISBN 978-1-60413-825-2 (hardcover) ISBN 978-1-4381-3369-0 (e-book) 1. Microorganisms--Juvenile literature. 2. Bacteria--Juvenile literature. 3. Microscopy-- Juvenile literature. 4. Human body--Juvenile literature. 5. Microscopes--Juvenile literature. I.Title. QR57.C744 2010 579--dc22 2009050353 Chelsea Clubhouse books are available at special discounts when purchased in bulk quantities for businesses, associations, institutions, or sales promotions. Please call our Special Sales Department in New York at (212) 967-8800 or (800) 322-8755. You can find Chelsea Clubhouse on the World Wide Web at http://www.chelseahouse.com Text design by Sabine Beaupré Illustrations by Stefan Chabluk Originated by Discovery Books Composition by Discovery Books Cover printed by Bang Printing, Brainerd, MN Book printed and bound by Bang Printing, Brainerd, MN Date printed: May 2010 Printed in the United States of America 10 9 8 7 6 5 4 3 2 1 This book is printed on acid-free paper. All links and Web addresses were checked and verified to be correct at the time of publication. Because of the dynamic nature of the Web, some addresses and links may have changed since publication and may no longer be valid. Acknowledgments We would like to thank the following for permission to reproduce photographs: © Bärbel Stecher and Wolf-Dietrich Hardt, Institute of Microbiology, ETH Zurich/SNF/Stecher et al. PLoS Biol 5(10): e 244: p. 27 top; Dennis Kunkel Microscopy, Inc.: pp. 7, 11, 19, 23, 26; Science Photo Library: pp. 5 (Ralph Eagle), 8 (Power and Syred), 10 (A. B. Dowsett), 12 (David Scharf), 13 (Biophoto Associates), 14 (David Scharf), 15 (Andrew Syred), 16 (P. Motta, University La Sapienza, Rome), 17 (David Scharf), 18 (Steve Gschmeissner), 20 (P. Motta and F. M. Magliocca), 21 (F. Carpino and P. Motta, University La Sapienza, Rome), 22 (M. A. Ansary), 25 (NIBSC), 27 bottom (P. Ferguson, ISM); Shutterstock Images: pp. 4 (Leah-Anne Thompson), 9 (Philip Dyer), 24 (Axel Kock), 29 (Raia). Contents The World Inside You 4 Cells Under the Microscope 6 A Look at DNA and Genes 8 Bacteria in the Body 10 A Layer of Skin 12 Life on Your Head 14 Inside Your Mouth 16 Into the Bloodstream 18 Digesting Your Food 20 Worm Host 22 Invader Viruses 24 The Fight Against Microbes 26 Size and Scale 28 About Microscopes 28 Micro-Detective 29 Glossary 30 Explore These Web Sites 31 Index 32 Some words are bold the first time they appear in the text.These words are explained in the glossary at the back of this book. The World Inside You Take a look in the mirror.You are very familiar with what you see there—your hair, your eyes, and the shape of your body. But you probably don’t spend much time thinking about the inside of your body. Nor do you put your body under the microscope and look at it up close. If you did, you would find that your body is a world of its own. It is made up of trillions of microscopic parts called cells. Microscopic life The cells are just the beginning, however.You may think you are the only thing living in your body, but you are not! An incredible number of microscopic living things inhabit your body along with you. Organisms are living things, and living things too small to see with the human eye are called microorganisms.These include microanimals so tiny that they go unnoticed on your skin. Even smaller are the microorganisms ... - tailieumienphi.vn