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If the human body were a building, the nervous system would be the electric wiring. It consists of two main parts: the central and peripheral nervous systems. These parts work in tandem to send signals from cell to cell and from body part to body part. At a basic level, these signals are responsible for coordinating organ systems and maintaining many other bodily functions. They also give humans the capacity for language and the understanding of abstract concepts that other organisms lack.

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1. Neurons

Because the nervous system is one of the most complex and intricate systems in nature, it can be difficult to understand without first understanding its components. Each section of the nervous system contains neurons that receive, process, and transmit electrical and chemical signals through connections called synapses. These signals carry the information necessary for the body to operate. Each neuron possesses a specific purpose and responds to stimuli only suited for that purpose. Some neurons are responsible for sensory inputs, while others assist with muscle contraction, for instance.

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other health-care professional.