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NURA 221 Adrenergic Exam Questions And Answers
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NURA 221 Adrenergic Exam Questions And AnswersAdrenergic stimulation gives similar response to __________ and is therefore referred to
as_____ - Answer sympathetic nervous system activation; sympathomimetic
what are the five main adrenergic receptors? - Answer alpha 1, alpha 2, beta 1, beta 2,
Dopaminergic
effects of alpha 1 receptor stimulation (2) - Answer 1. profuse, body-wide
vasoconstriction
2. Mydriasis
Primary uses for Alpha 1 stimulants (agonists) - Answer Hypotension
Homeostasis (?)
Nasal Decongestion (caused by vasoconsctrion of blood vessels)
Adjunct to local anesthesia
stimulate mydriasis (for eye exams) or correct miosis
main location of alpha 1 receptors - Answer peripheral blood vessels
describe stimulating alpha 2 receptors (administration of alpha 2 agaonist) causes/ -
Answer Peripheral alpha 2 receptor stimulation has little consequences/action
Alpha 2 receptors stimulated within CNS result in decrease of sympathetic outflow to
heart and vessels, theoretically those alpha 1 receptors are blocked and result in
vasodilations within peripheral vessels
End result of alpha 2 receptor stimulation (agonist) Answer hypotension (potentiall
severe, life threatening)
Analgesia (pain relief
, Where are Beta 1 receptors located? Answer Heart
Beta 1 receptor activation causes? (2) Answer increased HR, increased concratility
Primary use for beta 1 activation? Answer cardiac arrest
heart failure
shock
Atrioventricular block
primary location of Beta 2 receptors? Answer smooth muscle (think bronchial and
uterine muscles)
what are the effects of beta 2 activation? -Answer Dilatation of bronchial smooth
muscles
Relaxation of uterine muscle
Activation of glycogenolysis within liver
Primar uses for Beta 2 agonists -Answer Asthma
Delay of preterm labor
what is a potential concern w/ prolonged beta 2 agonist therapy?-Answer may cause
very high blood sugar
epinephrine stimulates what receptors?-Answer alpha 1, alpha 2, beta 1, beta 2
What is the exception for epinephrine adrenergic activation? - Answer Does not
stimulate vasoconstriction in liver and smooth muscles, may actually vasodilate there
instead
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