BIOL 1550 Lecture Notes - Lecture 5: Gastritis, Portal Hypertension, Skeletal Muscle
20 Oct 2016
School
Department
Course
Professor
Document Summary
Takes 5 half-lives to reach plateau when giving dose at each half life. Half-life: how long it takes for half of the drug to exit the body. Cns stimulants: caffeine, cocaine, nicotine (make the brain go faster) Cns depressants: heroin, alcohol (make the brain go slower) Hallucinogens: marijuana, ecstasy (a change in the way we interact with our environment) Use of a drug in a fashion that is inconsistent with medical or social norms . Disease process characterized by the continued use of a specific psychoactive substance despite physical, psychological or social harm . Tolerance: increased dose is required to achieve the desired effect. Physical dependence: physiological changes in the body such that drug is required for homeostasis. Withdrawal: collection of negative symptoms initiated by cessation of a drug. Drug addiction: disease process characterized by the continued use of specific psychoactive substances despite physical, psychologic, or social harm. Drug: amount of dopamine (da, desired properties, caffeine is low in dopamine.
