Human intelligence isn't just located in the brain. Our bodies are marvelously sophisticated and complex, with a variety of autonomic systems that help maintain our health without us ever having to think about them. But how exactly do all these physiological structures actually work? In Our Intelligent Bodies, physiology professor Gary F. Merrill takes you on a guided tour through the human body. You'll learn how our eyes are designed to detect unimaginably small bursts of light and how our ears contain bundles of tiny hairs, each one attuned to different sound frequencies. You'll also discover how our hearts are smart enough to compensate for skipped beats and irregular rhythms and how our pulmonary system adjusts for low oxygen levels. You'll even find out why the gut is sometimes called the 'second brain,' its reflexes controlled by millions of neurons. Written in a fun, easy-to-comprehend style and filled with illuminating analogies, Our Intelligent Bodies also brings readers up to date on cutting-edge research into the wonders of human physiology. It will give you a new appreciation for the smart decisions our bodies are making when our brains aren't paying attention.

Our Marvelous Bodies offers a unique perspective on the structure, function, and care of the major systems of the human body. Unlike other texts that use a strictly scientific approach, physiologist Gary F. Merrill relays medical facts alongside personal stories that help students relate to and apply the information. Readers learn the basics of feedback control systems, homeostasis, and physiological gradients. These principles apply to an understanding of the body’s functioning under optimal, healthy conditions, and they provide insight into states of acute and chronic illness. Separate chapters are devoted to each of the body’s systems in detail: nervous, endocrine, cardiovascular, respiratory, renal, gastrointestinal, musculoskeletal, reproductive, and immune. Through a series of real-life examples, the book also shows the importance of maintaining careful medical records for health care professionals, scientists, and patients alike.

People in developed countries are living longer and, just as the aged population around the world is steadily growing, the number of adults eighty-five and older in the United States is projected to quadruple to twenty-one million people by 2050. The aging of our population has huge implications for baby boomers and their children, and has generated a greater interest in the causes and effects of aging.
"Our Aging Bodies" provides a clear, scientifically based explanation of what happens to all the major organ systems and bodily processes--such as the cardiovascular and digestive systems--as people age. The first section is an overview of secondary aging--changes that occur with age that are related to disease and the environment--and include the effect of such things as diet, humor, and exercise. Readers will also learn about primary aging--intrinsic changes that occur with the aging of specific organs and body systems (including the prostate, the heart, the digestive system, and the brain). Throughout the book, Gary F. Merrill weaves in personal anecdotes and stories that help clarify and reinforce the facts and principles of the underlying scientific processes and explanations. "Our Aging Bodies" is accessible to a general reader interested in the aging phenomenon, or baby boomers wanting to be more informed when seeing their doctor and discussing changes to their bodies as they age.