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NURS 3380 - PNS-Questions with Correct Answers/ Verified

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What stimulates a response? Neurotransmitter binding to receptor T/F: neurotransmitters can be recycles to wait for another action potential T What are the effects of agonizing the parasympathetic NS? - constricted pupils - bradycardia - bronchoconstriction - increased gastric secretion - ...

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  • August 16, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NURS 3380
  • NURS 3380
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MikeHarris
NURS 3380 - PNS-Questions with Correct Answers/ Verified
What stimulates a response?

Neurotransmitter binding to receptor

T/F: neurotransmitters can be recycles to wait for another action potential

T

What are the effects of agonizing the parasympathetic NS?

- constricted pupils
- bradycardia
- bronchoconstriction
- increased gastric secretion
- emptying bowel and bladder

What are the effects of agonizing the sympathetic NS?

- tachycardia
- HTN
- bronchodilation
- dilated pupils
- shunting of blood away from skin

What is dual innervation in ANS?

Parasympathetic and sympathetic are competing to agonize the receptors.

What 3 ways does the ANS regulate physiologic processes?

- dual innervation and control
-feedback regulation
- autonomic tone

What does the baroreceptor do?

regulates blood pressure

What system helps males get an erection?

Parasympathetic

What system helps males ejaculate?

Sympathetic

What is the main neurotransmitter of the cholinergic system

Acetylcholine

What are the cholinergic receptor subtypes?

- nicotinicN
- NictoninicM
- Muscarinic

, T/F: nicotinic N cholinergic receptor subtype stimulates neuronal transmission on both PSNS and SNS

T

What does activation of the nicotinicM receptor do?

Contracts smooth muscle

What does the activation of muscarinic receptors do?

- increase glandular secretion
- contraction of bronchial, cardiac smooth muscle

What are the adrenergic receptor subtypes?

- alpha 1
- alpha 2
- beta 1
- beta 2
- dopamine

What is the function of alpha 1 receptor subtype?

- vasoconstriction
- ejaculation
- contraction of bladder neck and prostate

What is the function of alpha 2 receptor subtype?

- feedback loop to stop NE release

What is the function of Beta 1 receptor subtype

- increase HR, contractile force, and conduction
- increase renin

What is the function of Beta 2 receptor subtype?

- bronchial dilation
- relaxation of uterine muscle
- vasodilation

What is the function of dopamine in the adrenergic system?

SNS effects

If you block _________________, the breakdown of acetylcholine is blocked, leading to excessive
activation of receptors

Acetylcholinesterase

What is critical in the synthesis of NE?

Dopamine

T/F: patients on MAOIs will have more NE in their synaptic cleft

T

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