The 5th English edition has been thoroughly revised in terms of content and organization of the didactic material; almost all of the color illustrations have been drawn anew for improved clarity. The extensive introductory chapter focuses on aspects of cytophysiology. Owing to the considerably expanded text and improved illustrative material, functional connections are easily recognized; new concepts and current advances in research are taken fully into account. Main features are: General and cellular physiology; Nerve and muscle; Autonomic nervous system; Blood; respiration; Acid-base balance; Kidney salt and water balance; Heart and circulation; Thermal balance and thermoregulation; Nutrition and digestion; Hormonal control; Central nervous system and senses.