About the Author

Kenneth S. Saladin is Professor of Biology at Georgia College & State University in Milledgeville, Georgia, where he has taught since 1977. Ken teaches human anatomy and physiology, introductory medical physiology, histology, animal behavior, and natural history of the Galápagos Islands. He has also previously taught introductory biology, general zoology, sociobiology, parasitology, and biomedical etymology. Ken is a member of the Human Anatomy and Physiology Society, American Association of Anatomists, American Physiological Society, Society for Integrative and Comparative Biology, and American Association for the Advancement of Science. He is the author of the best-selling textbooks Anatomy & Physiology: The Unity of Form and Function and Human Anatomy. Ken and his wife Diane have two adult children. Robin McFarland has taught anatomy and physiology at Cabrillo College in Aptos, CA since 1998. She earned a Ph.D. in physical (biological) anthropology from the University of Washington, where she studied the relationship between body fat and reproduction in primates.Robin collaborates on studies of ape anatomy with Adrienne Zihlman at the University of California, Santa Cruz. Robin is a member of the Human Anatomy and Physiology Society, American Association of Anatomists, and American Association of Physical Anthropologists. She was also contributing author to Human Anatomy, second edition, by Ken Saladin. She and her husband Jeff have two children, Reid and Madeleine. Robin enjoys hiking and climbing mountains with her family. Christina A. Gan, digital author for Connect, has been teaching anatomy and physiology, genetics, microbiology, and general biology at Highline College near Seattle, Washington, since 2004. Before that, she taught at Rogue Community College in Medford, Oregon for 6 years. She earned her M.A. in biology from Humboldt State University where she studied population genetics, and is a member of the Human Anatomy and Physiology Society. When she is not in the classroom or developing digital media, she is climbing, mountaineering, skiing, kayaking, sailing, cycling, and mountain biking throughout the Pacific Northwest.