The central nervous system (CNS) is the part of the nervous system that integrates the information that it receives from, and coordinates the activity of, all parts of the bodies of bilaterian animals—that is, all multicellular animals except radially symmetric animals such as sponges and jellyfish. It contains the majority of the nervous system and consists of the brain and the spinal cord. Some classifications also include the retina and the cranial nerves in the CNS. Together with the peripheral nervous system, it has a fundamental role in the control of behavior. The CNS is contained within the dorsal cavity, with the brain in the cranial cavity and the spinal cord in the spinal cavity. In vertebrates, the brain is protected by the skull, while the spinal cord is protected by the vertebrae, and both are enclosed in the meninges.
Read more about Central Nervous System: Development, Evolution, Diseases of The Central Nervous System
Famous quotes containing the words nervous system, central, nervous and/or system:
“A car can massage organs which no masseur can reach. It is the one remedy for the disorders of the great sympathetic nervous system.”
—Jean Cocteau (1889–1963)
“But when the self speaks to the self, who is speaking?—the entombed soul, the spirit driven in, in, in to the central catacomb; the self that took the veil and left the world—a coward perhaps, yet somehow beautiful, as it flits with its lantern restlessly up and down the dark corridors.”
—Virginia Woolf (1882–1941)
“It is a bore, I admit, to be past seventy, for you are left for execution, and are daily expecting the death-warrant; but ... it is not anything very capital we quit. We are, at the close of life, only hurried away from stomach-aches, pains in the joints, from sleepless nights and unamusing days, from weakness, ugliness, and nervous tremors; but we shall all meet again in another planet, cured of all our defects.”
—Sydney Smith (1771–1845)
“Few white citizens are acquainted with blacks other than those projected by the media and the so—called educational system, which is nothing more than a system of rewards and punishments based upon one’s ability to pledge loyalty oaths to Anglo culture. The media and the “educational system” are the prime sources of racism in the United States.”
—Ishmael Reed (b. 1938)