Physiology of the Nervous System: Brain and Body in Action offers an in-depth examination of how the nervous system enables the human body to perceive, respond, and adapt to its environment. Covering both central and peripheral components, the book integrates structural anatomy with functional physiology to present a complete picture of nervous system dynamics. The text is structured to guide readers from the cellular and molecular mechanisms of neural communication through to complex processes such as sensory integration, motor coordination, autonomic control, and cognitive function. Special attention is given to the bidirectional relationship between the brain and the body, emphasizing the system’s role in maintaining homeostasis and supporting behavior. Designed for students and professionals in neuroscience, physiology, medicine, and allied health sciences, this book combines detailed explanations with supportive diagrams, clinical correlations, and review questions to reinforce learning. Topics such as neural development, plasticity, and neurological disorders are also addressed, providing a modern and clinically relevant perspective. By connecting theoretical knowledge with real-world applications, Physiology of the Nervous System fosters a functional understanding of how the nervous system influences every aspect of human health and activity. It is both a comprehensive reference and a valuable educational tool for understanding this essential biological system.