From the very first edition, Principles of Anatomy and Physiology has been recognized for its pioneering homeostatic approach to learning structure and function of the human body. The 16^th edition continues to set the discipline standardby combining exceptional content and outstanding visuals for a rich and comprehensive experience. Highly regarded authors, Jerry Tortora and Bryan Derrickson motivate and support learners at every level, from novice to expert, and equip them with the skills they need to succeed in this class and beyond.