This document provides an overview of the tasks and functions of the nervous system, including recollection and knowledge, voluntary regulation of drive, programming of spinal cord reactions, and control of the internal environment of the body. It also discusses the structural ordering of the nervous system, the purposes of the main parts of the brain, the meninges that surround the central nervous system, the origin and structure of sympathetic and parasympathetic nerves, the nervous system response to stepping on a sharp object, the parts of an unmyelinated and myelinated neuron, and the events that lead to a nerve impulse. Additionally, it explains the steps involved in chemical transport across a synapse, defines endocrine glands and highlights the functional difference between the endocrine and nervous system. Finally, it describes the connection between an endocrine gland and the nervous system to illustrate neuroendocrine control.
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