The nervous system regulates the activities of all organs and systems of humans, causing their functional integrity, and provides a connection of the organism as a whole with the environment. The structural unit of the nervous system is the neuron - a nerve cell, with its branches. Other nervous system is a collection of neurons that contacting with each other using special connections - synapses form a neural circuit. Last operate on the principle of reflection, ie reflex. Called reflex response of the body to the irritation of the environment or the internal environment, implemented with the participation of the central nervous system. If you get more information, visit our site: BEST ESSAY CHEAP
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