NIDA for Teens: The Science Behind Drug Abuse
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  • Cannabinoid receptor: The receptor in the brain that recognizes anandamide and THC, the active ingredient in marijuana. [5]
  • Cannabinoids: Chemicals that help control mental and physical processes when produced naturally by the body and that produce intoxication and other effects when absorbed from marijuana. [1]
  • Cannabis: The botanical name for the plant from which marijuana comes. [5]
  • Carcinogen: Any substance that causes cancer. [1]
  • Cardiovascular system: The heart and blood vessels. [2]
  • Cell body (or soma): The central structure of a neuron, which contains the cell nucleus. The cell body contains the molecular machinery that regulates the activity of the neuron. [5]
  • Central nervous system: The brain and spinal cord. [5]
  • Cerebellum: A portion of the brain that helps regulate posture, balance, and coordination. [5]
  • Cerebral cortex: Region of the brain responsible for cognitive functions including reasoning, mood, and perception of stimuli. [4]
  • Cerebral hemispheres: The two specialized halves of the brain. The left hemisphere is specialized for speech, writing, language, and calculation; the right hemisphere is specialized for spatial abilities, face recognition in vision, and some aspects of music perception and production. [5]
  • Cerebrum: The upper part of the brain consisting of the left and right hemispheres. [5]
  • Chloroform: A colorless volatile liquid used as a medical anesthetic gas. [9]
  • Chronic: Refers to a disease or condition that persists over a long period of time. [5]
  • Coca: The plant, Erythroxylon, from which cocaine is derived. Also refers to the leaves of this plant. [6]
  • Cocaethylene: A substance created in the body when cocaine and alcohol are used together; chemically similar to cocaine. [6]
  • Cocaine: A highly addictive stimulant drug derived from the coca plant that produces profound feelings of pleasure. [5]
  • Crack: "Slang" term for a smokeable form of cocaine. [6]
  • Craving: A powerful, often uncontrollable desire for drugs. [3]
  • Cyclohexyl nitrite: A chemical found in substances marketed as room deodorizers. [9]
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