Dale Layman, Ph.D., Grand Ph.D. in Medicine, is a popular Professor of Biology and Human Anatomy and Physiology at Joliet Junior College in Illinois. He is the author of many articles, as well as "Biology Demystified" and "Physiology Demystified, " two closely related books in this series. He is the first Grand Doctor of Philosophy in Medicine in the United States, and has received many other international honors and awards for his writing, teaching, and highly creative thinking. Dr. Layman has more than 28 years of experience in the biological sciences.