Changes in Chapter Organization

In three cases, I felt that a subject could be presented more effectively by rearrangements and content substitutions within a chapter. Other chapters continue to be organized as they were in the second edition.

Chapter 1, Major Themes of Anatomy and Physiology

Here I replaced the section on human taxonomic classification with sections on anatomical and physiological variability. This gives the chapter a less zoological and more clinical flavor. Also, I feel it is important at the outset of such a course to instill a sense of the familiar roots of biomedical terms, the importance of precision in spelling, and other aspects of vocabulary. Thus I moved the former appendix B, which introduced students to medical etymology, to chapter 1 ("The Language of Medicine," p. 19).

Chapter 17, The Endocrine System

As many reviewers desired, I have separated endocrine pathology from normal physiology and placed the pathology at the end of the chapter.

Chapter 21, The Lymphatic and Immune Systems

I have found it more effective to present cellular immunity before humoral immunity, since humoral immunity depends on some concepts such as helper T cells usually introduced in the context of cellular immunity.

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Essentials of Human Physiology

Essentials of Human Physiology

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.

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