A nurse educator is teaching pharmacokinetics to the pharmacology class. What statement, made by a student, would show the class understands this term?
1. "Pharmacokinetics describes how the body absorbs, distributes, metabolizes, and excretes drugs."
2. "Pharmacokinetics is how drugs activate specific receptors."
3. "Pharmacokinetics is what a drug does to the body."
4. "Pharmacokinetics is the efficacy of a drug."
1
Rationale 1: Pharmacokinetics describes how the body absorbs, distributes, metabolizes, and excretes drugs.
Rationale 2:Drug–receptor interactions describe, in part, what effects a drug has on the body, and thus are considered part of pharmacodynamics.
Rationale 3:Pharmacodynamics is the term that describes what effects a drug has on the body.
Rationale 4:Efficacy is a pharmacodynamic concept.
Global Rationale: Pharmacokinetics describes how the body absorbs, distributes, metabolizes, and excretes drugs. Pharmacokinetics is how drugs activate specific receptors is incorrect because drug–receptor interactions describe, in part, what effects a drug has on the body, and thus are considered part of pharmacodynamics. Pharmacokinetics is what a drug does to the body is incorrect because pharmacodynamics is the term that describes what effects a drug has on the body. Pharmacokinetics is the efficacy of a drug is incorrect because efficacy is a pharmacodynamic concept.
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