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nervous system

noun, Anatomy, Zoology
the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia.
a particular part of this system.
Origin of nervous system
1730-40 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for nervous system
  • How parasites affect their hosts' nervous system is a poorly understood area of research.
  • And, as in the uterus, progesterone's regulation of cell division in the nervous system is complex.
  • Tobacco is said to produce derangement of the digestion, and of the regular, steady action of the nervous system.
  • Or he might be fussing because he had an immature nervous system.
  • It also involves the spinal cord and nervous system, and more generally the endocrine system and all your organs.
  • Tina is crystal methamphetamine, a chemical stimulant that affects the central nervous system.
  • It is of particular interest to notice their adaptation to the growth and changes in the form of the central nervous system.
  • But his nervous system had begun to be affected through the toxins evolved by the bacillus of his disease.
  • Sailfish can change their colors almost instantly, since the change is controlled by their nervous system.
  • Previous research found that the animals lack a key messenger that carries the signal of burning pain through the nervous system.
British Dictionary definitions for nervous system

nervous system

the sensory and control apparatus of all multicellular animals above the level of sponges, consisting of a network of nerve cells See neurone See also central nervous system
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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nervous system in Medicine

nervous system n.
The system of cells, tissues, and organs that regulates the body's responses to internal and external stimuli. In vertebrates it consists of the brain, spinal cord, nerves, ganglia, and parts of the receptor and effector organs.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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nervous system in Science
nervous system
The system of neurons and tissues that regulates the actions and responses of vertebrates and many invertebrates. The nervous system of vertebrates is a complex information-processing system that consists mainly of the brain, spinal cord, and peripheral and autonomic nerves. It receives chemical information from hormones in the circulating blood and can also regulate secretions of the endocrine system by the action of neurohormones. The nervous systems of invertebrates vary from a simple network of nerves to a complex nerve network under the control of a primitive brain. See also autonomic nervous system, central nervous system, peripheral nervous system.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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nervous system in Culture

nervous system definition

The system in the body that controls internal functions of the body and receives, interprets, and responds to stimuli. The nervous system is made up of the brain, the spinal cord, the nerves, and the sense organs, such as the eye and ear.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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