Schematic representation of the main divisions of the respiratory tract. (Reproduced, with permission, from Junqueira LC, Carneiro J: Basic Histology: Text and Atlas, 10th ed. New York: McGraw-Hill. 2003:349.) Source: Chapter 10. Pulmonary Physical Therapy, McGraw-Hill's NPTE (National Physical Therapy Examination), 2e Citation: Dutton M. McGraw-Hill's NPTE (National Physical Therapy Examination), 2e; 2012 Available at: https://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/npte2/npte2_c010f001.png&sec=40178087&BookID=478&ChapterSecID=40174789&imagename= Accessed: October 26, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved