Why do you shift from walking to running at a particular speed? How can we predict transition speeds for animals of different sizes? Why must the flexible elastic of arterial walls behave differently than a rubber tube or balloon? How do leaves manage to expose a broad expanse of surface while suffering only a small fraction of the drag of flags in high winds?

The field of biomechanicshow living things move and workhasn't seen a new general textbook in more than two decades. Here a leading investigator and teacher lays out the key concepts of biomechanics using examples drawn from throughout the plant and animal kingdoms. Up-to-date and comprehensive, this is also the only book to give thorough coverage to both major subfields of biomechanics: fluid and solid mechanics.

Steven Vogel explains how biomechanics makes use of models and methods drawn from physics and mechanical engineering to investigate a wide range of general questionsfrom how animals swim and fly and the modes of terrestrial locomotion to the way organisms respond to wind and water currents and the operation of circulatory and suspension-feeding systems. He looks also at the relationships between the properties of biological materialsspider silk, jellyfish jelly, muscle, and moreand their various structural and functional roles.

While written primarily for biology majors and graduate students in biology, this text will be useful for physical scientists and engineers seeking a sense of the state of the art of biomechanics and a guide to its rather scattered literature. For a still wider audience, it establishes the basic biological context for such applied areas as ergonomics, orthopedics, mechanical prosthetics, kinesiology, sports medicine, and biomimetics.