The Nervous System

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The Nervous System
1011302The Nervous System
Overview The nervous system, present in all vertebrates and most invertebrates, is concerned with that universal property of life called irritability, the capacity of cells and whole organisms to respond in a characteristic fashion to changes in the environment called stimuli. These stimuli may arise from internal as well as external alterations. The specific reaction elicited by a stimulus is termed a response. Generally, the response yields an adjustment that promotes the well-being of the entity. Stimulus-response reactions are usually rapid and …
George H. Fried; George J. Hademenos: Schaum's Outline of Biology, Fourth Edition. The Nervous System, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export