Gary A. Thibodeau, PhD, Chancellor Emeritus and Professor Emeritus of Biology, University of Wisconsin, River Falls, River Falls, Wisconsin, USA and Kevin T. Patton, PhD, Professor of Anatomy & Physiology Instruction, New York Chiropractic College, Seneca Falls, New York; Professor Emeritus of Life Sciences, St. Charles Community College, Cottleville, Missouri; Assistant Professor Emeritus of Physiology, Course Director Emeritus in Human Physiology, St. Louis University Medical School, St. Louis, Missouri, USA