As an undergraduate, Ron Jensh majored in biology and was active in the Pre-Med Society, Economics Club, Chapel Choir, House of Representatives, and WVBU radio. A member of Sigma Phi Epsilon fraternity, he was a dean's list student.
In 1962, he also earned a master's degree in zoology with a minor in experimental psychology.
He moved to Philadelphia and, in 1966, obtained a Ph.D. in anatomy from the Jefferson Medical College of Thomas Jefferson University, where he has worked for the past 31 years. He is currently professor of pathology, anatomy, and cell biology, and associate professor of pediatrics at Jefferson. He served as vice chairman for the department of anatomy from 1984-94 and has been the section chief of microscopic anatomy since 1988.
His area of research involves the prevention of birth defects, and his laboratory, which is internationally recognized, is one of the few in the world, which conducts radiation behavioral teratologic studies. He also is actively involved in the application of innovative technology as it pertains to biomedical education. He has been personally involved in the training of medical students in treating both the physical and psychological needs of patients and their families. His book, Lifelines, which shares his unique view as both patient and medical educator, has been an inspiration to medical students and professionals, as well as patients and their families.
He has been a reviewer for a number of scientific journals and an active member of medical committees and professional societies. He has been a scientific advisor to the National Institutes of Health and a founding member and president of the Neurobehavioral Teratology Society. The recipient of numerous awards, including the Lindback Award for Distinguished Teaching and the Burlington Northern Foundation Faculty Achievement Award, in 1986, he was inducted into the Bucknell Mu Chapter of Phi Beta Kappa.