This handy reference helps make the language of anatomy as well as physiology and pathology more understandable and less intimidating. Fascinating trivia, plus serious facts, combine to answer over 1,200 questions about the human body, including What is Gray's Anatomy? What does it mean to have 20/20 vision? Why is blood sticky? How does exercise affect the heart? What is "gluten intolerance"? Is urine always yellow in color? What are the seven warning signs of Alzheimer's disease? What is a reflex? How much sleep does an individual need? Can humans use organs from other animals for transplants?