nervous system definition

The central nervous system (CNS) is the part of the nervous system consisting of the brain and spinal cord. The CNS is so named because it integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric animals—that is, all multicellular animals except sponges and radially symmetric animals such as jellyfish—and it contains the majority of the nervous system. Many consider the retina and the optic nerve (cranial nerve II), as well as the olfactory nerves (cranial nerve I) and olfactory epithelium as parts of the CNS, synapsing directly on brain tissue without intermediate ganglia. As such, the olfactory epithelium is the only central nervous tissue in direct contact with the environment, which opens up for therapeutic treatments. The CNS is contained within the dorsal body cavity, with the brain housed in the cranial cavity and the spinal cord in the spinal canal. In vertebrates, the brain is protected by the skull, while the spinal cord is protected by the vertebrae. The brain and spinal cord are both enclosed in the meninges. Within the CNS, the interneuronal space is filled with a large amount of supporting non-nervous cells called neuroglial cells.

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Leaman Ralph

Really sugar is shaky because it originates from a straight stick see the play is Granny yes Grandma plus new style luv MaryJane so listen (Granny Apple last years blue ribbon production winner AKA) I, I, I ain't on the right side of my house Jane something or the other is in my room: finally after an extermination Grannie speaks once more "let my (old man) Pacman step on it". See it is home on the range so solo as it be truity speaks got a problem it is your own. But alter scenario: Z/n time; narcotics I got that candy s.p.ee..d360 Bar itch its' and Mickey Mouse for the Sultan 7 1 4er well a hem a hem, it went early in the morning like a smack chanting sugar structure 7 -one 1 +eleven and 4 do an ate 'er 8 eight 'er? Well that aint nice. NARCO says do you know them numbers change (response) Yes it is a FiX they are MF's Ope yeah Ope Douglas is it. Surrounded by Alkaloid is both Mary and Grandma in an never ending circle of membership. French mandates declare put up their dukes... ZEN Pepsi can talk half Chocolate and your ole man Pacman down in Cuba posing as the worlds one and only Coffee Wizard "back 1:1" tis Coffee time... ||