The nervous system is the part of an animal 's body that coordinates its voluntary and involuntary actions and transmits signals to and from different parts of its body.Nervous tissue first arose in wormlike organisms about 550 to 600 million years ago.he size of the nervous system ranges from a few hundred cells in the simplest worms, to around 100 billion cells in humans. The central nervous system functions to send signals from one cell to others, or from one part of the body to others and to receive feedback.
Leslie, Missouri. Leslie is a village in Franklin County, Missouri, United States. The population was 171 at the 2010 census.
Sponsored Topics. Bridgeton is a city in northwestern St. Louis County, Missouri, serving as a suburb and transport hub within Greater St. Louis. The 2007 population estimate by the U.S. Census Bureau was 15,086, down 464 people (3%) from the 2000 census. Portions of Lambert-Saint Louis International Airport are within Bridgeton.