CORRECT ANSWERS 2025/2026
Direct-acting (epinephrine, norepinephrine) - correct answers -Directly stimulates
adrenergic receptor
Indirect-acting (amphetamine) - correct answers -Stimulates release of
norepinephrine from terminal nerve endings
Mixed-acting (ephedrine) - correct answers -Stimulates adrenergic receptor sites
and stimulates release of norepinephrine from terminal nerve endings
Catecholamines - correct answers -Produce sympathetic response
Endogenous
Epinephrine, norepinephrine, dopamine
Synthetic
Isoproterenol, dobutamine
Noncatecholamines - correct answers -Stimulate adrenergic receptors
Most have longer duration of action than endogenous and synthetic
Phenylephrine, metaproterenol, albuterol