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Dan Chiras once again offers a refreshing and student-friendly introduction to the structure, function, health, and homeostasis of the human body in a modernized ninth edition of Human Biology. This acclaimed text explores life from a variety of levels and perspectives, including cellular/molecular, by body system, through disease, and within the environment. Dr. Chiras retains the theme of homeostasis in this edition, emphasizing the importance of maintaining health by understanding the delicate internal balances of the body’s systems within the context of the external environment. The Ninth Edition features a new chapter dedicated to the integumentary system as well as new sections covering evolution, injuries and diseases of the muscles, the pineal gland, and more. New information on GMOs, immunotherapy, vertigo, brain diseases, new cancer treatments, and more thought-provoking discussions encourage students to think critically about timely and relevant information that affects their lives. The logical organization, relatable topics, and outstanding pedagogical features, make Human Biology, Ninth Edition a fun and engaging learning experience.

• Part 1 Organization of Life: From Molecules to Humankind
• Chapter 1 Principles of Human Biology, Science, and Critical Thinking
• Chapter 2 An Introduction to the Chemistry of Life
• Chapter 3 The Life of the Cell
• Part 2 Human Body Systems: Homeostasis and Health
• Chapter 4 Principles of Structure and Function
• Chapter 5 The Circulatory System
• Chapter 6 The Blood
• Chapter 7 Nutrition and The Digestive System
• Chapter 8 The Integumentary System
• Chapter 9 The Respiratory System
• Chapter 10 The Urinary System
• Chapter 11 The Skeletal System
• Chapter 12 The Muscular System
• Chapter 13 The Nervous System
• Chapter 14 The Senses
• Chapter 15 The Endocrine System
• Chapter 16 The Immune System
• Chapter 17 Human Reproduction
• Chapter 18 Human Development and Aging
• Part 3 Cell Division and Human Heredity
• Chapter 19 Chromosomes, Cell Division, and the Cell Cycle
• Chapter 20 Principles of Human Heredity
• Chapter 21 How Genes Work
• Chapter 22 Genetic Engineering and Biotechnology
• Part 4 Infectious Disease, Evolution, and Ecology (online only)
• Chapter 23 Human Infectious Disease (online only)
• Chapter 24 Evolution (online only)
• Chapter 25 Ecology and the Environment (online only)
• Appendix A Periodic Table of the Elements
• Appendix B The Metric System
• Appendix C Thinking Critically Analyses

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