David Shier
David Shier has accumulated twenty-two years of experience teaching anatomy and physiology, primarily to premedical, nursing, dental, and allied health students. He has effectively incorporated his extensive teaching experience into a student-friendly revision of Hole's Human Anatomy and Physiology and Hole's Essentials of Human Anatomy and Physiology. David has published numerous papers and abstracts in the areas of renal and cardiovascular physiology, the endocrinology of fluid and electrolyte balance, and hypertension. A faculty member in the Life Science Department at Washtenaw Community College, he is actively involved in a number of projects dealing with assessment, articulation, and the incorporation of technology into instructional design. David holds a Ph.D. in physiology from the University of Michigan.

Jackie Butler
Jackie Butler's professional background includes work at the University of Texas Health Science Center conducting research about the genetics of bilateral retinoblastoma. She later worked at Houston's M. D. Anderson Hospital conducting research on remission in leukemia patients. Now a popular educator at Grayson County Community College, Jackie teaches microbiology and human anatomy and physiology for health science majors. Her experience and work with students of various educational backgrounds have contributed significantly to the effective revision of Hole's Human Anatomy and Physiology and Hole's Essentials of Human Anatomy and Physiology. Jackie Butler received her B.S. and M.S. degrees from Texas A&M University, focusing on microbiology, including courses in immunology and epidemiology.

Ricki Lewis
Ricki Lewis, author of the successful WCB/McGraw-Hill textbooks Life and Human Genetics, effectively combines the skills of scientist and journalist. Since earning her Ph.D. in genetics from Indiana University in 1980, she has published more than 3,000 articles in scientific as well as popular publications. Ricki contributes regularly to The Scientist, Biophotonics International and has published an essay collection, Discovery: Windows on the Life Sciences. She is a genetic counselor for a private medical practice in upstate New York, and is an adjunct professor of biology at the University at Albany and at Miami University. Ricki brings a molecular, cellular, and genetics perspective, with an effective journalistic flair, to Hole's Human Anatomy and Physiology.