Intro to Pharmacology Flashcards
What deals with the mechanisms of action, uses and unwanted effects of drugs on living tissues?
Pharmacology
What is a substance that modifies the activity of living tissue?
A drug
What is the science of how living tissues function
Physiology
What is the study of the use of pharmacological agents in disease states?
Therapeutics
What is the study of how the body goes wrong in disease states?
Pathology
What is an agonist?
Drug, or naturally occurring body substance, that directly cause a measurable response
Are agonist responses excitatory or inhibitory?
They can be either, depending on the receptor being activated
What is affinity?
Binding of a drug to its receptor
What is efficacy?
Ability of a drug to activate the receptor i.e. elicit a response
What is an antagonist?
A substance that binds to a receptor but does not activate it. Instead, it blocks or inhibits the action of an agonist
When drugs counteract each other by acting on the same receptor type is called what?
Pharmacological antagonism
Do antagonists have affinity and efficacy?
No, antagonists only have affinity.
One drug antagonising the action of another, chemically combining with it is called what?
Chemical antagonism
What is called when two drugs counteract each other by producing opposing effects on different receptors?
Physiological antagonism
