Читать книгу Fundamentals of Pharmacology for Paramedics - Группа авторов - Страница 41

Agonist A drug that binds to a receptor and produces the same response as the endogenous substance. For example, morphine is an agonist at opioid receptors because it produces the same response as the endorphins produce.Antagonist A drug that binds to a receptor and prevents the endogenous substance or an agonist from binding and having its effect. Also known as a blocker, because it blocks the activation of the receptor.Contraindication A characteristic or condition which would prevent a patient from being able to receive a certain medication.First‐pass metabolism The metabolism of a large proportion of an administered dose of a drug by the liver almost immediately after absorption.Indication A condition or symptom which a medication is approved to treat.Pharmacodynamics The actions of a drug on the body.Pharmacokinetics The actions of the body on the drug.Receptor The site at which a drug molecule binds to have its action.