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
- ...
NURS 3380 - PNS-Questions with Correct Answers/ Verified/ latest
Update (2024/2025)
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
What are the side effects of cholinergic agonists
- Salivation
- Lacrimation
- Urinary incontinence
- Diarrhea
- GI cramps
- Erection/emesis
Direct-acting cholinergic agonists have what mechanism of action?
Binds to cholinergic receptors
Indirect-acting cholinergic agonists have what mechanism of action?
Inhibits acteylcholinestrase to increase the amount of acetylcholine in the synaptic cleft
What are the direct-acting muscarinic agonists?
- Bethanechol
- pilocarpine
- acetylcholine
- muscarine
- cevimeline
What direct-acting muscarinic agonist is used specifically for urinary retention and illeus?
Bethanecol
What are direct-acting muscarinic agonists used for?
- glaucoma
- GERD
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MikeHarris. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
