nervous system

network of cells that transmit nerve impulses throughout the body (to the brain, muscles, and organs)

The nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and also stops input from the senses, and initiates actions. Prominent parts of a nervous system include neurons and nerves, which are used in coordination. All parts of the nervous system are made of nervous tissue. The classification of the nervous system is mostly similar in humans as in other vertebrates.
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Nervous system n. The system of cells, tissues, and organs that regulates the body's responses to internal and external stimuli. [more]Nervous system - Community and Resources

Noun
1. the sensory and control apparatus consisting of a network of nerve cells
(synonym) systema nervosum
(hypernym) system
(hyponym) sympathetic nervous system
(part-holonym) body, organic structure, physical structure
(part-meronym) nervous tissue, nerve tissue

The nervous system is the body tissue that records and distributes information in the body using electrical and chemical transmission. It has two parts. The "central" nervous system is comprised of the brain and spinal cord. The "peripheral" nervous system is the nerve tissue that transmits sensation and motor information back and forth from the body to the central nervous system.