The eighth edition incorporates a number of new and recently modified physiological concepts. This may surprise people who are unfamiliar with the subject; indeed, I'm sometimes asked if the field really changes much from one edition to the next. It does; that's one of the reasons physiology is so much fun to study. I've tried to impart this sense of excitement and fun in the book by indicating, in a manner appropriate for this level of text, where knowledge is new and where gaps in our knowledge remain. Following is a partial list of the topical additions and updates made to the eighth edition. New figures added to support the coordinating text discussion are also indicated.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.