Organized around the central theme of homeostasis, ESSENTIALS OF PHYSIOLOGY, 4e, International Edition is a carefully condensed version of Lauralee Sherwood’s HUMAN PHYSIOLOGY: FROM CELLS TO SYSTEMS, International Edition. It provides clear, current, concise, clinically oriented coverage of physiology. Many analogies and frequent references to everyday experiences help students relate to the physiology concepts presented. Offering helpful art and pedagogical features, Sherwood promotes understanding of the basic principles and concepts of physiology rather than memorization of details and provides a foundation for future careers in the health professions.