PSY318H5 Study Guide - Diazepam, Apoptosis, Cortisol
Document Summary
The influence of drugs and hormones on behaviour. 7 adults hospitalized after an encounter with heroin containing mptp (contaminant) Mptp acts as a selective neurotoxin, killing cells of substantia nigra thereby reducing amount of dopamine in brain. His brain showed increased dopamine function & he had a decrease in motor symptoms. The influence of drugs and hormones on behavior. Study of how drugs affect the nervous system and behavior. Drug: chemical compound administered to bring about some desired change in the body. A substance that acts to alter mood, thought, or behavior. Route of administration: way in which a drug enters and passes through body to reach target. Generally fewer barriers if drug is inhaled or injected; fewest obstacles - injected directly into brain. Drugs are metabolized in the kidneys, liver, and bile. Drugs are excreted in the urine, feces, sweat, breast milk, and exhaled air. Brain capillaries composed of endothelial cells that have tight junctions.
