from the introduction: This book is designed to help the undergraduate aeronautical student understand the basic functions and reactions of the human body to the many facets of modern flight. Other textbooks now available are either designed for the medical community or are too basic for the level of study desired in our classrooms. Therefore this text covers the elementary scientific information necessary for understanding some of the more complex physiological functions of the human body as well as some of the more advanced concepts encountered by humans in flight.