What role do receptors play in pharmacodynamics?
Medications must bind with receptors to mimic or block the actions of the body's own regulatory molecules.
Activation of the receptor by the medication will cause the cell to develop a new function.
Receptors are necessary to start the process of metabolism of the medication by the liver.
Binding of a medication to a receptor will allow the medication to become more selective to that type of receptor.
The Correct Answer is A
In pharmacodynamics, receptors play a crucial role in mediating the effects of medications ¹. Medications must bind with receptors to mimic or block the actions of the body's own regulatory molecules ¹. This binding can activate or inhibit the receptor, leading to a biological response ¹.
Option B is incorrect because activation of the receptor by the medication does not necessarily cause the cell to develop a new function.
Option C is incorrect because receptors do not start the process of metabolism of the medication by the liver.
Option D is incorrect because binding a medication to a receptor does not necessarily make the medication more selective to that type of receptor.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Reduced hepatic blood flow can decrease the metabolism and excretion of many drugs, requiring that doses of some drugs be decreased ². This can increase the risk of medication toxicity in older adults.
Option B is not correct because reduced body fat is not a physiological change associated with aging.
Option C is not correct because the glomerular filtration rate decreases with age ².
Option D is not correct because gastric motility decreases with age ².
Correct Answer is ["B","C","D","E"]
Explanation
The common adverse effects of fluoxetine that the nurse should include in their health teaching are nervousness, dry mouth, decreased libido, and insomnia ². These are all known side effects of fluoxetine and can occur in some people who take the medication.
Option A is incorrect because low-grade fever is not a common side effect of fluoxetine.
Option f is incorrect because bradycardia (slow heart rate) is not a common side effect of fluoxetine.
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