Which of the following statements is true about medications that are AGONISTS?
Medications that block the usual receptor activity that endogenous compounds regulate or the receptor activity of other medications.
Medications that bind to or mimic the receptor activity that endogenous compounds regulate
Medications that bind or block receptor activity with Limited affinity to receptor sites.
None of the above
The Correct Answer is B
A. This describes an antagonist, not an agonist.
B. Agonists are medications that bind to receptors and mimic the actions of naturally occurring substances in the body.
C. This is incorrect because agonists generally have a high affinity for their receptors and activate them.
D. This is incorrect, as option B accurately describes an agonist.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B"]
Explanation
A. BUN is a waste product of protein metabolism that is excreted by the kidneys. Elevated BUN levels can indicate impaired kidney function or kidney dysfunction. Since kidney dysfunction can affect the elimination of waste products, monitoring BUN is essential to assess the kidney's ability to filter and excrete waste.
B. Creatinine is a waste product of muscle metabolism that is filtered out by the kidneys. It is one of the most reliable indicators of kidney function. When kidney function is impaired, creatinine levels rise in the blood because the kidneys are unable to excrete it efficiently.
C. Lipid panel: This is unrelated to the metabolism of medications.
D. Blood glucose: Blood glucose levels are important for diabetes management but are not directly impacted by kidney dysfunction in relation to medication response.
Correct Answer is A
Explanation
A. The first-pass effect refers to the metabolism of a drug in the liver before it reaches systemic circulation. This primarily affects oral medications, as they are absorbed through the gastrointestinal tract and first pass through the liver.
B. Intravenous (IV) drugs bypass the first-pass effect as they are directly introduced into the bloodstream.
C. Intramuscular (IM) and D. Subcutaneous (SC) routes also bypass the first-pass effect since the drug enters the bloodstream without passing through the liver initially.
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