Initial lymph capillaries are microscopic, one-way vessels that begin “blindly” in the interstitial spaces. The black arrows indicate blood flow, and white arrows indicate lymph flow. (Reprinted with permission from Shier D, Butler J, Lewis R. Hole's Human Anatomy and Physiology. 9th ed. Boston, MA: The McGraw-Hill Companies Inc; 2002.) Source: Chapter 22. Physical Therapy Associated with Lymphatic System Disorders, Cardiovascular and Pulmonary Physical Therapy: An Evidence-Based Approach, 2e Citation: DeTurk WE, Cahalin LP. Cardiovascular and Pulmonary Physical Therapy: An Evidence-Based Approach, 2e; 2011 Available at: https://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/detu2/detu2_c022f003.gif&sec=39701746&BookID=456&ChapterSecID=39695867&imagename= Accessed: October 31, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved