Exam 3 Review Flashcards
Substance P is an excitatory substance that increases the secretion and motility of the GI tract. Which part of the ANS is being supported by this action?
a. parasympathetic
b. sympathetic
A
True or false: Drugs that mimic the action of endogenous catecholamines are sympathomimetic drugs (adrenergic agonists). A direct-acting agonist helps reduce the metabolism of catecholamines.
FALSE
What is the primary neurotransmitter released from preganglionic neurons at the sympathetic/parasympathetic ganglionic sites?
a. NE
b. EPI
c. ACh
d. Neuropeptide Y
A
The anticipation of eating results in salivation secretion as a response to…..
a. sympathetic stimulation
b. parasympathetic stimulation
B
Organophosphates are cholinesterase inhibitors and the poisoning can result in all of these actions EXCEPT:
a. profuse salivation
b. severe bronchoconstriction
c. relaxation of GI smooth muscle
d. urination
C
Regarding to the use of NMB agents, which one of the following is incorrect?
a. These muscles increase muscle relaxation.
b. An available apparatus for administering mechanical ventilation is always required.
c. Some of them are eliminated by Hofmann elimination.
d. Prior administration of sedation or tranquilization is not necessary/
D
True or false: Metoclopramide is useful for the treatment of GI obstruction.
FALSE
Which of the following H2 receptor antagonists also has a prokinetic action in the GI tract?
a. Cimetidine
b. Ranitidine
c. Famotidine
B
One of the big concerns of using erythromycin as a prokinetic drug is….
a. determining the right dose for achieving the desired effect
b. ensure the release of motilin
c. may cause diarrhea
d. can caus reflux esophagitis
C- can alter the microflora
Pilocarpine is a parasympathomimetic drug. Which response do you expect to see following administration?
a. decreased peristaltic activity
b. mydriatic effect
c. increased IOP
d. miosis effect
D
Terbutaline, albuterol, and clenbuterol are selective agonists to which receptors?
a. alpha-1
b. alpha-2
c. alpha-1 and beta-1
d. beta-2
D
The vasoconstriction of blood vessels is a response to the stimulus of…
a. isoproterenol
b. dopamine
c. phenylephrine
C
True or false: An individual endogenous catecholaime or sympathomimetic drug may exhibit higher affinity or selectivity for one or more adrenergic receptor subtypes. EPI is one example of a very selective alpha-1 receptor agonist.
FALSE
