Written for the two semester anatomy & physiology course, Seeley's A&P provides the depth necessary for subjects not requiring prerequisites, and yet, is presented with clarity so that it balances the thorough coverage. Clear descriptions and exceptional illustrations combine to help students develop a firm understanding of the concepts of anatomy and physiology and to teach them how to use that information. Great care has been taken to select important concepts and to perfectly describe the anatomy of cells, organs and organ systems. To emphasise the concepts of anatomy and physiology, the authors provide explanations of how the systems respond to ageing, changes in physical activity, and disease, with a special focus on homeostasis and the regulatory mechanisms that maintain it. This text has more clinical content than any other A&P book on the market.