A student asked the pharmacology instructor to describe the function of a cholinergic agonist.
What would be the instructor’s reply?
Cholinergic agonist decreases the activity of gamma-aminobutyric acid (GABA) receptor sites throughout the body.
Cholinergic agonist decreases the activity of norepinephrine throughout the body.
Cholinergic agonist increases the activity of dopamine receptor sites throughout the brain and spinal cord.
Cholinergic agonist increases the activity of acetylcholine receptor sites throughout the body.
The Correct Answer is D
Choice A rationale
This choice is incorrect. Cholinergic agonists primarily affect acetylcholine receptors, not GABA receptors. GABA receptors are involved in the inhibitory neurotransmission in the central nervous system and are the target of different drug classes, such as benzodiazepines and barbiturates, which are not related to cholinergic agonists.
Choice B rationale
This choice is incorrect. Cholinergic agonists do not decrease norepinephrine activity. Norepinephrine is a neurotransmitter involved in the sympathetic nervous system response, which is different from the cholinergic system. Drugs that decrease norepinephrine activity would have a different mechanism of action, such as adrenergic antagonists.
Choice C rationale
This choice is incorrect. The primary action of cholinergic agonists is not to increase dopamine activity. Dopamine is another neurotransmitter involved in various brain functions, including reward and motor control. Cholinergic agonists specifically target acetylcholine receptors, enhancing their activity, which is not related to dopamine receptors.
Choice D rationale
This choice is correct. Cholinergic agonists increase the activity of acetylcholine receptor sites throughout the body. These drugs mimic the action of acetylcholine, a neurotransmitter that plays a key role in the parasympathetic nervous system, which regulates functions such as muscle contraction, gland secretion, and heart rate. Enhancing acetylcholine activity helps in conditions like myasthenia gravis and certain types of glaucoma.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Glycopyrrolate is an anticholinergic medication that reduces secretions in the mouth, throat, and airways but is not typically used for bronchospasm associated with COPD.
Choice B rationale
Ipratropium is an anticholinergic bronchodilator that is commonly used to treat bronchospasm associated with COPD. It works by relaxing the muscles around the airways to improve breathing.
Choice C rationale
Atropine is an anticholinergic medication used to treat bradycardia and reduce secretions but is not indicated for bronchospasm associated with COPD.
Choice D rationale
Flavoxate is a urinary antispasmodic used to relieve symptoms of bladder spasms but has no role in the treatment of bronchospasm associated with COPD.
Correct Answer is D
Explanation
Choice A rationale
While maintaining patient confidentiality is crucial, it does not address the immediate medical needs of the patient with chronic renal failure. The primary concern should be addressing the health implications of their condition and ensuring proper care coordination.
Choice B rationale
Administering medications ordered immediately is essential, but it is not the first priority without knowing the patient's current status and medical history. The nurse needs to ensure that the medications prescribed are appropriate for a patient with chronic renal failure.
Choice C rationale
Providing teaching about chronic renal failure is important for long-term management but is not the first priority upon admission. Immediate medical needs and communication with the care team take precedence in this acute care setting.
Choice D rationale
Calling the admitting physician immediately is the first priority. The primary care provider needs to be aware of the patient's diagnosis of chronic renal failure to adjust treatment plans accordingly. Immediate communication ensures that all healthcare professionals are on the same page regarding the patient's care. .
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.