NUR 210 Exam 4 Actual Questions and
Correct Answers (Verified Answers) Already
Graded A+ | New Update 2026/2027
Question 1
Which pharmacokinetic process describes the movement of a medication from the
gastrointestinal tract into the bloodstream?
A) Distribution
B) Absorption
C) Metabolism
D) Excretion
Correct Answer: B) Absorption
Rationale: Absorption is the movement of a medication from its site of administration into systemic
circulation. Oral medications generally must pass through the gastrointestinal tract before entering
the bloodstream. Distribution occurs after absorption, metabolism primarily occurs in the liver, and
excretion removes drugs from the body, commonly through the kidneys.
Question 2
Which organ is primarily responsible for the metabolism of most medications?
A) Heart
B) Liver
C) Spleen
D) Pancreas
Correct Answer: B) Liver
,Rationale: The liver contains extensive enzyme systems, particularly the cytochrome P450 system,
that metabolize many medications. Liver dysfunction can therefore increase drug concentrations
and toxicity because medications may not be cleared efficiently.
Question 3
Define pharmacodynamics.
A) The study of what the body does to a drug
B) The study of what a drug does to the body
C) The study of drug absorption
D) The study of drug excretion
Correct Answer: B) The study of what a drug does to the body
Rationale: Pharmacodynamics is the study of what a medication does to the body, including its
mechanisms of action and physiological effects. Pharmacodynamics focuses on drug effects at
receptors, enzymes, ion channels, and other biological targets. In contrast, pharmacokinetics
describes what the body does to the drug through absorption, distribution, metabolism, and
excretion.
Question 4
A medication has a half-life of 8 hours. Approximately how long would it take for the medication
to reach near-complete elimination after several half-lives?
A) 8 hours
B) 16 hours
C) 24 hours
D) Approximately 40 hours
Correct Answer: D) Approximately 40 hours
Rationale: Approximately five half-lives are generally required for a drug to be eliminated to about
3% of its original concentration. Five half-lives of 8 hours equals approximately 40 hours.
,Question 5
Which route of administration generally produces the fastest systemic drug effect?
A) Oral
B) Subcutaneous
C) Intramuscular
D) Intravenous
Correct Answer: D) Intravenous
Rationale: Intravenous administration places the medication directly into systemic circulation,
resulting in essentially complete bioavailability and a rapid effect. Oral, subcutaneous, and
intramuscular routes require additional absorption.
Question 6
Which term describes the percentage of an administered drug dose that reaches systemic
circulation unchanged?
A) Potency
B) Bioavailability
C) Efficacy
D) Therapeutic index
Correct Answer: B) Bioavailability
Rationale: Bioavailability represents the fraction of a drug dose that reaches systemic circulation
unchanged. It is 100% for intravenous administration and less for other routes due to incomplete
absorption and first-pass metabolism.
Question 7
A patient with severe hypoalbuminemia receives a medication that is normally 95% protein-
bound. Which pharmacologic consequence should the nurse anticipate?
A) Reduced absorption from the gastrointestinal tract
B) Increased free drug concentration and potentially greater toxicity
, C) Accelerated renal elimination of the unbound drug
D) Complete prevention of drug distribution into tissues
Correct Answer: B) Increased free drug concentration and potentially greater toxicity
Rationale: Reduced albumin increases the unbound fraction of highly protein-bound medications.
Because unbound drug is pharmacologically active, the patient may experience exaggerated effects
or toxicity even when the total serum concentration appears therapeutic.
Question 8
A patient with severe hepatic impairment is prescribed a medication extensively metabolized by
the liver. Which effect is most clinically important?
A) Increased first-pass metabolism
B) Decreased bioavailability
C) Reduced drug clearance and prolonged exposure
D) Increased renal filtration of the parent drug
Correct Answer: C) Reduced drug clearance and prolonged exposure
Rationale: Hepatic dysfunction can decrease metabolism and clearance, increasing drug exposure
and half-life. Dosage reduction or increased monitoring may therefore be necessary.
Question 9
A medication has a half-life of 8 hours. Approximately what percentage of the drug remains
after 24 hours, assuming first-order elimination?
A) 50%
B) 25%
C) 12.5%
D) 6.25%
Correct Answer: C) 12.5%
Rationale: Twenty-four hours represents three half-lives. The amount remaining progresses from
100% to 50%, then 25%, then 12.5%.
Correct Answers (Verified Answers) Already
Graded A+ | New Update 2026/2027
Question 1
Which pharmacokinetic process describes the movement of a medication from the
gastrointestinal tract into the bloodstream?
A) Distribution
B) Absorption
C) Metabolism
D) Excretion
Correct Answer: B) Absorption
Rationale: Absorption is the movement of a medication from its site of administration into systemic
circulation. Oral medications generally must pass through the gastrointestinal tract before entering
the bloodstream. Distribution occurs after absorption, metabolism primarily occurs in the liver, and
excretion removes drugs from the body, commonly through the kidneys.
Question 2
Which organ is primarily responsible for the metabolism of most medications?
A) Heart
B) Liver
C) Spleen
D) Pancreas
Correct Answer: B) Liver
,Rationale: The liver contains extensive enzyme systems, particularly the cytochrome P450 system,
that metabolize many medications. Liver dysfunction can therefore increase drug concentrations
and toxicity because medications may not be cleared efficiently.
Question 3
Define pharmacodynamics.
A) The study of what the body does to a drug
B) The study of what a drug does to the body
C) The study of drug absorption
D) The study of drug excretion
Correct Answer: B) The study of what a drug does to the body
Rationale: Pharmacodynamics is the study of what a medication does to the body, including its
mechanisms of action and physiological effects. Pharmacodynamics focuses on drug effects at
receptors, enzymes, ion channels, and other biological targets. In contrast, pharmacokinetics
describes what the body does to the drug through absorption, distribution, metabolism, and
excretion.
Question 4
A medication has a half-life of 8 hours. Approximately how long would it take for the medication
to reach near-complete elimination after several half-lives?
A) 8 hours
B) 16 hours
C) 24 hours
D) Approximately 40 hours
Correct Answer: D) Approximately 40 hours
Rationale: Approximately five half-lives are generally required for a drug to be eliminated to about
3% of its original concentration. Five half-lives of 8 hours equals approximately 40 hours.
,Question 5
Which route of administration generally produces the fastest systemic drug effect?
A) Oral
B) Subcutaneous
C) Intramuscular
D) Intravenous
Correct Answer: D) Intravenous
Rationale: Intravenous administration places the medication directly into systemic circulation,
resulting in essentially complete bioavailability and a rapid effect. Oral, subcutaneous, and
intramuscular routes require additional absorption.
Question 6
Which term describes the percentage of an administered drug dose that reaches systemic
circulation unchanged?
A) Potency
B) Bioavailability
C) Efficacy
D) Therapeutic index
Correct Answer: B) Bioavailability
Rationale: Bioavailability represents the fraction of a drug dose that reaches systemic circulation
unchanged. It is 100% for intravenous administration and less for other routes due to incomplete
absorption and first-pass metabolism.
Question 7
A patient with severe hypoalbuminemia receives a medication that is normally 95% protein-
bound. Which pharmacologic consequence should the nurse anticipate?
A) Reduced absorption from the gastrointestinal tract
B) Increased free drug concentration and potentially greater toxicity
, C) Accelerated renal elimination of the unbound drug
D) Complete prevention of drug distribution into tissues
Correct Answer: B) Increased free drug concentration and potentially greater toxicity
Rationale: Reduced albumin increases the unbound fraction of highly protein-bound medications.
Because unbound drug is pharmacologically active, the patient may experience exaggerated effects
or toxicity even when the total serum concentration appears therapeutic.
Question 8
A patient with severe hepatic impairment is prescribed a medication extensively metabolized by
the liver. Which effect is most clinically important?
A) Increased first-pass metabolism
B) Decreased bioavailability
C) Reduced drug clearance and prolonged exposure
D) Increased renal filtration of the parent drug
Correct Answer: C) Reduced drug clearance and prolonged exposure
Rationale: Hepatic dysfunction can decrease metabolism and clearance, increasing drug exposure
and half-life. Dosage reduction or increased monitoring may therefore be necessary.
Question 9
A medication has a half-life of 8 hours. Approximately what percentage of the drug remains
after 24 hours, assuming first-order elimination?
A) 50%
B) 25%
C) 12.5%
D) 6.25%
Correct Answer: C) 12.5%
Rationale: Twenty-four hours represents three half-lives. The amount remaining progresses from
100% to 50%, then 25%, then 12.5%.
