This collection of articles by internationally recognized researchers highlights the major questions and accomplishment of modern physiological research and demonstrates that modern molecular methods can well be incorporated and strengthen the original integrative perspectives of physiology set out by Claude Bernard's concept of the "milieu interieur." Among the critical issues discussed are the place of functional genomics in regulatory physiology, the role of model systems in integrative physiology, the function of neural circuits in behavior and consciousness, and the influence of external challenges to the whole body and the environment on genes. Perceptive and timely, Integrative Physiology in the Proteomics and Post-Genomics Age bridges the gap between molecular biology and whole body function, establishing the future of physiology as an integrative science based on new molecular insights.