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INTRODUCTION TO PHARMACOLOGY

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Term
Definition
Absorption   The process by which a drug is taken into the body and moves from the site of administration into the blood.  
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Adverse effects   Are undesired, potentially harmful side effects of drugs. They can include nausea and vomiting, drug toxicity, hypersensitivity, and unusual reactions.  
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Agonist   Are drugs that bind to or have an attraction for a receptor and cause a particular response.  
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Antagonist   Drugs that bind to a receptor and prevent a response.  
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Bioavailability   Indicates the degree to which the drug molecule reaches the site of action to exert its effects.  
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Biotechnology   Concepts of genetic engineering and recombinant DNA technology.  
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Biotransformation   the chemical composition of a drug is changed by a process called metabolism.  
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Bolus   Drugs that are given all at once.  
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Contraindication   Reasons against giving a particular drug  
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Distribution   The process in which drug molecules eventually diffuse out of the blood-stream to the site of action.  
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Duration   The time between onset and disappearance of drug effects  
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Emulsion   Type of liquid medication form and can be either water in oil or oil in water, depending on the medication’s solubility.  
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Enteral   Indicates that the medication is taken into the gastrointestinal tract, primarily by mouth.  
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Excretion   Medications taken into the body are eliminated in the process  
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Hypersensitivity   An adverse effect resulting from previous exposure to the drug or a similar drug.  
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Idiosyncratic effect   Type of adverse effect that is thought to occur in people with some genetic abnormality, causing either an excessive or an inadequate response to a drug.  
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Indication   The reason or purpose for giving a medication.  
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Local effect   Some topical agents work at the site of application.  
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Onset   The time between administration of a drug and the first appearance of effects  
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Parenteral   Any route other than the digestive tract, the most common of which are subcutaneous, intramuscular, and intravenous.  
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Pharmacodynamics   The study of how drugs exert their effects on the body, at both the molecular and physiological levels.  
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Pharmacokinetics   Focuses on how the body processes drugs.  
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Plasma protein binding   Drug molecules that bind to proteins contained in plasma  
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Reconstituted   Mixed with a liquid  
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Side effect   A predictable but unintended effect of a drug.  
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Solubility   Ability to be dissolved  
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Solution   A mixture of drug particles  
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Suspension   A mixture of drug particles fully dissolved in a liquid medium  
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Synergist   A drug that enhances the effect of another drug  
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Systemic effect   Medications that exert throughout the entire body  
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Topical   Applied to the skin surface or a mucous membrane-lined cavity.  
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Controlled substances   High abuse potential drug  
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Narcotics   Is a controlled substance because they can be addictive and potentially abused  
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DEA   Drug Enforcement Administration  
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FDA   Food and Drug Administration  
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The Joint Commission   The predominant standards-setting organization, and facilities that obtain its accreditation demonstrate their commitment to meeting certain performance standards.  
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OTC   over-the-counter  
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PDR   Physicians’ Desk Reference  
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USP-NF   United States Pharmacopeia and National Formulary  
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