NU 578 - Unit 1 Practice Questions and Answers- Updated 2024
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Course
2024/2025
Institution
2024/2025
NU 578 - Unit 1 Practice Questions and
Answers- Updated 2024
What are the effects of a1 agonists? (5) - Answer-— DAVE doesn't pee —
Dilation of eyes
Arterioles constrict (mucous membranes, skin, viscera)
Veins constrict
Ejaculation
Contraction of prostatic capsule & contraction of trigon...
Dilation of prostatic capsule (helps men with BPH)
Prevent excess release of catecholamines (epi & nori; helps with pheochromocytoma - a tumor
that releases excess catecholamines; can be given preop before this tumor type is removed)
What are the effects of a2 antagonists? - Answer✔✔-Allow continual release of acetylcholine
(normally agonists will block the release)
What are effects of B1 antagonists? (2) - Answer✔✔-Decreased HR, force of contraction, AV
node conduction speed
No release of renin (so no increase in BP)
What are effects of B2 antagonists? - Answer✔✔-No fight or flight symptoms
(No increased HR, no dilation of vessels)
What are the effects of a2 agonists? (1) - Answer✔✔-Inhibition of neurotransmitter (epi or nori
release)
What are effects of B1 agonists? (2) - Answer✔✔-Increased HR, force of contraction, AV
conduction speed
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