The ultimate organ of life is the brain. Even the determination of death often depends upon whether or not the brain is viable. The most common cause of brain injury is some form of impaired brain blood flow. Such problems can develop as a result of accidents to arteries in the neck or brain, occlusion of vessels secondary to atherosclerotic processes, and, surprisingly frequently, aneurysms that occur as a result of vessel wall tearing. Fortunately, treatment of these problems is constantly improving.
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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.