Definition of "nervous system" []

• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Cocoa bean mulch, which many dogs are inclined to chow down on because it smells almost as yummy as brownies, can cause gastrointestinal issues vomiting and diarrhea, cardiovascular issues such as abnormal heart rate, and central nervous system problems including tremors and seizures, says Camille DiClementi of the ASPCA's Animal Poison Control Center."
• "Lipoic acid affects cellular migration into the central nervous system and stabilizes blood-brain barrier integrity."
• "A number of scientists are now investigating whether autism might conceivably be attributed to the formation of autoantibodies against the central nervous system in genetically susceptible individuals."