Exam (elaborations)
NURS 5334 Module 4 Questions With Complete Solutions
- Course
- NURS 5334
- Institution
- University Of Texas - Arlington
NURS 5334 Module 4 Questions With Complete Solutions
[Show more]
Content preview
NURS 5334 Module 4 Questions With Complete SolutionsWhat are the mechanisms by which neuropharmacologic agents
act?
Transmitter synthesis is the first step in transmission. What are
the other 4 steps?
True or false. Neuropharmacologic drugs have high selectivity.
True. Neuropharmacologic drugs have high selectivity because
the nervous system uses many different receptor types.
What are 3 functions of the ANS?
1. Regulate the heart
2. regulate the secretory glands (salivary, gastric, sweat, and
bronchial)
3. Regulate the smooth muscles (bronchi, blood vessels,
urogenital system, and GI tract)
What are the regulatory functions of the PNS?
1. Slowing HR
2. Increasing gastric secretions
3. Emptying the bladder
4. Emptying the bowel
5. Focusing the eyes for near vision
6. Constricting the pupils
7. Contracting bronchial smooth muscles
What are the functions of the SNS?
1. Regulation of the CV system
2. Regulation of body temp
3. Implementation of the "fight-or-flight" response
How does the SNS regulate the CV system?
1. Maintaining blood flow to the brain
2. Redistributing blood
3. Compensating for lost blood
,How does the SNS regulate body temp?
1. Regulates blood flow to the skin
2. Promotes secretion of sweat
3. Induces piloerection
What are the effects of the "fight-or-flight" response?
1. Increased HR and BP
2. Shunting of blood away from the skin and viscera
3. Dilation of the bronchi
4. Pupil dilation
5. Mobilization of stored energy
What is the baroreceptor reflex?
-Receptors near heart monitor BP changes and send info to brain
-Brain activates ANS to restore BP to normal
-When BP falls, baroreceptor reflex causes vasoconstriction and
increases cardiac output
-When BP rises, baroreceptor reflex causes vasodilation and
reduces cardiac output
Where is acetylcholine employed?
Most junctions of the PNS
Where is norepinephrine released?
By most postganglionic neurons
Where is epinephrine released?
Adrenal medulla
What are cholinergic receptors mediated by?
Acetylcholine
What are cholinergic receptor subtypes?
Nicotinic and muscarinic
What are the functions of nicotinic receptors?
-Ganglionic transmission at all ganglia of the SNS and PNS
-Promotes release of epi from the adrenal medulla
What are the functions of muscarinic receptors?
,-Increased glandular secretions (pulmonary, gastric, intestinal,
and sweat)
-Contraction of smooth muscles in bronchial and GI tract
-Slowing of HR
-Contraction of sphincter muscles of iris (miosis)
-Contraction of ciliary muscle of the eye (near vision)
-Dilation of blood vessels
-Voiding of urinary bladder
What are adrenergic receptors mediated by?
epi and NE
What are adrenergic receptor subtypes?
-Alpha 1
-Alpha 2
-Beta 1
-Beta 2
-Dopamine
What are the functions of alpha 1 receptors?
-Vasoconstriction
-Ejaculation
-Contraction of bladder neck and prostate
What are the functions of alpha 2 receptors?
-Minimal clinical significance
-Located in presynaptic junction
What are the functions of beta 1 receptors?
Heart:
-Increased HR
-Increased force of contraction
-Increased velocity of conduction in atrioventricular (AV) node
Kidney:
-Renin release
, What are the functions of beta 2 receptors?
-Bronchial dilation
-Relaxation of uterine muscle
-Vasodilation
-Glycogenolysis
What are the functions of dopamine receptors?
Dilation of renal blood vessels
Which receptors are activated by epi?
All alpha and beta; does not activate dopamine receptors
Which receptors are activated by NE?
Alpha 1, alpha 2, beta 1; does not activate beta 2 of dopamine
receptors
Which receptors are activated by dopamine?
Alpha 1, beta 1, and dopamine receptors
What do muscarinic agonists do?
Mimic the effects of Ach at muscarinic receptors
What do muscarininc antagonists do?
Selectively block the effects of Ach (and other muscarinic)
agonists at muscarinic receptors
What are the therapeutic uses of Bethanechol?
-Urinary retention
-Investigational GI uses
What are the actions of Bethanechol on smooth muscles?
-Lungs: constriction of bronchi
-GI: increased tone and motility
-Bladder: contraction of detrusor muscle and relaxation of
trigone and sphincter
What are the actions of Bethanechol on exocrine glands?
-Increased sweating
-Increased salivation
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 Demetrius. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
64419 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now