NUR 378 EXAM 3 2026 LATEST QUESTION AND ANSWER| (CONCORDIA ST. PAUL) REAL SPRING-SUMMER SEMESTER EXAM

NUR 378 EXAM 3 2026 LATEST QUESTION
AND ANSWER| (CONCORDIA ST. PAUL) REAL
SPRING-SUMMER SEMESTER EXAM
adrenergic drugs are similar to or mimic _____ which are _____
SNS neurotransmitters;

norepinephrine, epinephrine, dopamine


these SNS neurotransmitters are known as...
catecholamines


types of catecholamines
endogenous

synthetic


endogenous catecholamines
dopamine

epinephrine

(also available in synthetic drug form)


synthetic catecholamines
phenylephrine


MOA dopamine
depends on the dosage

stimulates alpha1- and beta1-adrenergic receptors


alpha1-adrenergic receptors are located at...

,smooth muscles


beta1-adrenergic receptors are located at...
myocardium

SA node

AV node


dopamine is a ____-adrenergic
beta


dopamine is a ______ catecholamine
naturally occurring


dopamine at low dosages:
dilates blood vessels of:

brain
heart
kidney
mesentery


dopamine at low dosages acts on...
dopaminergic receptors


dopamine at moderate dosages:
improves cardiac contractility and output


dopamine at moderate dosages acts on...
beta1-receptors


dopamine at high dosages:

, causes vasoconstriction


dopamine at high dosages acts on...
alpha1-receptors


when a beta1-adrenergic receptor is stimulated by an adrenergic drug, what three
things can result?
1. positive inotropic effect

2. positive chronotropic effect

3. positive dromotropic effect


inotropic
strength of contraction


positive inotropic effect example
increase in the force of contraction


chronotropic
rate of contraction


positive chronotropic effect example
increase heart rate


dromotropic
heart conductivity


positive dromotropic effect example
increase in conduction of cardiac electrical nerve impulses through AV node


epinephrine is an _____ catecholamine