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 \ninset:J.Bavosi/Photo Researchers,Inc.;page 16:Sellem-Demri-Voisin/Photo Researchers,Inc.;page 19:Science Photo Library  \n/Photo Researchers,Inc.;page 20:Lea Paterson/Photo Researchers,Inc.;pages 23,27:Kent Wood/Photo Researchers,Inc.;  \npage 24:Mark Clark/Photo Researchers,Inc.;page 28:LADA/Photo Researchers,Inc.;inset:CNRI/Photo Researchers,Inc.;  \npage 31:Coneyl Jay/Photo Researchers,Inc.  \nThe name of the Smithsonian,Smithsonian Institution and the sunburst logoare registered trademarks of the Smithsonian Institution.Collins is an imprint of HarperCollins Publishers.  \nLungsCopyright ⑥2007 by Seymour SimonIntroduction copyright ◎2007 by the Smithsonian InstitutionManufactured in China.  \nNo part of this book may be used or reproduced in any manner whatsoever without wrien permision except in the case of briefquotations embodied in critical articles and reviews.For information address HarperCollins Children's Books,a division of  \nHarperCollins Publishers,1350 Avenue of the Americas,New York,NY 10019.  \nwww.harpercollinschildrens.com  \nLibrary of Congress Cataloging-in-Publication Data  \nSimon,Seymour.  \nLungs/Seymour Simon.-1st edp.cm.  \nIncludes bibliographical references and index.  \nISBN-10:0-06-0546549(trade bdg)一ISBN-13:9780060546540(trade bdg.)ISBN-10:0-06-054655-7(lib.bdg)—ISBN-13:978-006054655-7(lib.bdg.)  \n1.Lungs—Juvenile literature.2.Respiration—Juvenile literature.L.Title.QP121S55320072006003768612.2—dc22  \nTypography by Drew Willis  \n12345678910  \nFirst Edition  \n# Smithsonian Mission Statement\n\nFor more than 160 years,the Smithsonian has remained true to its mission,“theincrease and diffusion of knowledge.”Today the Smithsonian is not only theworld's largest provider of museum experiences supported by authoritativescholarship in science,history,and the arts but also an international leader inscientific research and exploration.The Smithsonian offers the world apicture of America,and America a picture of the world.  \n## Introduction\n\nDid you know that you breathe more than 20,000 times each and every day?Yourlungs provide this amazing service,day in and day out,along with many otherimportant activities that we simply take for granted.Read on to discover whyyour lungs are at work every time you speak,play a musical instrument,smellcookies baking,yawn,snore,sneeze,cough,or hiccup.How do they do it?Theanswers are here,providing details on how your entire respiratory systemfunctions,and explaining why your lungs are so important.From the momentyou are born,your lungs are on the job,making everything else you do possible.  \n—Don E.WilsonSenior Scientist and Curator of Mamm","cbCaiif59kejUcqV","https://ap.wps.com/l/cbCaiif59kejUcqV","pdf",4168915,"English","# Introduction\n## Smithsonian Mission Statement\n## Your Lungs at Work Every Day\n## The Journey of Air to Your Lungs\n## Nose and Nasal Cavity\n## Sinuses","[{\"question\":\"Why are lungs essential for survival?\",\"answer\":\"Lungs fill with oxygen and push carbon dioxide out during exhalation. Without the respiratory system, the body cannot receive the oxygen it needs to survive.\"},{\"question\":\"How often do humans breathe in a day?\",\"answer\":\"Humans breathe more than 20,000 times each and every day, providing constant airflow support throughout life.\"},{\"question\":\"What parts of the body help filter and prepare the air before it reaches deeper airways?\",\"answer\":\"Air enters through the nose or mouth, where cartilage structures form nostrils. Tiny cilia and mucus trap dust and germs, and tear ducts drain into the nasal cavity.\"}]","Lungs - Seymour Simon - Introduction - Smithsonian Mission Statement | PDF",1791881905,101]