NSG 5240 Advanced Pharmacology —
Midterm Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2027 Q&A | Instant
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1. Which phase of pharmacokinetics is primarily responsible for the
movement of a drug from the bloodstream into body tissues?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Answer: B. Distribution
Rationale: Distribution refers to the movement of a drug from systemic
circulation into tissues and organs. Factors influencing distribution
include blood flow, protein binding, membrane permeability, and tissue
,affinity. Understanding distribution helps clinicians predict therapeutic
effects and potential toxicity.
2. A patient with severe liver disease is most likely to experience
alterations in which pharmacokinetic process?
A. Absorption
B. Distribution
C. Metabolism
D. Elimination through lungs
Answer: C. Metabolism
Rationale: The liver is the primary site for drug metabolism, particularly
through the cytochrome P450 enzyme system. Liver impairment reduces
drug metabolism, increasing plasma concentrations and prolonging
drug action, often necessitating dosage adjustments.
3. Which drug receptor interaction produces the maximum
biological response?
A. Partial agonist
B. Competitive antagonist
,C. Agonist
D. Inverse agonist
Answer: C. Agonist
Rationale: A full agonist binds to receptors and activates them to
produce the maximum physiological response. Partial agonists activate
receptors but produce a weaker response, while antagonists block
receptor activation.
4. The first-pass effect primarily occurs in the:
A. Kidney
B. Liver
C. Heart
D. Lung
Answer: B. Liver
Rationale: Oral medications absorbed through the gastrointestinal tract
enter the portal circulation and pass through the liver before reaching
systemic circulation. Significant metabolism during this first pass
decreases bioavailability.
, 5. Bioavailability refers to:
A. Drug elimination rate
B. Percentage of drug reaching systemic circulation unchanged
C. Time to peak effect
D. Drug half-life
Answer: B. Percentage of drug reaching systemic circulation
unchanged
Rationale: Bioavailability measures the extent and rate at which an
active drug reaches systemic circulation. Intravenous medications have
100% bioavailability, whereas oral medications typically have lower
bioavailability due to incomplete absorption and first-pass metabolism.
6. Which medication administration route completely avoids first-
pass metabolism?
A. Oral
B. Rectal
C. Intravenous
D. Gastric tube
Answer: C. Intravenous
Midterm Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2027 Q&A | Instant
Download Pdf
1. Which phase of pharmacokinetics is primarily responsible for the
movement of a drug from the bloodstream into body tissues?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Answer: B. Distribution
Rationale: Distribution refers to the movement of a drug from systemic
circulation into tissues and organs. Factors influencing distribution
include blood flow, protein binding, membrane permeability, and tissue
,affinity. Understanding distribution helps clinicians predict therapeutic
effects and potential toxicity.
2. A patient with severe liver disease is most likely to experience
alterations in which pharmacokinetic process?
A. Absorption
B. Distribution
C. Metabolism
D. Elimination through lungs
Answer: C. Metabolism
Rationale: The liver is the primary site for drug metabolism, particularly
through the cytochrome P450 enzyme system. Liver impairment reduces
drug metabolism, increasing plasma concentrations and prolonging
drug action, often necessitating dosage adjustments.
3. Which drug receptor interaction produces the maximum
biological response?
A. Partial agonist
B. Competitive antagonist
,C. Agonist
D. Inverse agonist
Answer: C. Agonist
Rationale: A full agonist binds to receptors and activates them to
produce the maximum physiological response. Partial agonists activate
receptors but produce a weaker response, while antagonists block
receptor activation.
4. The first-pass effect primarily occurs in the:
A. Kidney
B. Liver
C. Heart
D. Lung
Answer: B. Liver
Rationale: Oral medications absorbed through the gastrointestinal tract
enter the portal circulation and pass through the liver before reaching
systemic circulation. Significant metabolism during this first pass
decreases bioavailability.
, 5. Bioavailability refers to:
A. Drug elimination rate
B. Percentage of drug reaching systemic circulation unchanged
C. Time to peak effect
D. Drug half-life
Answer: B. Percentage of drug reaching systemic circulation
unchanged
Rationale: Bioavailability measures the extent and rate at which an
active drug reaches systemic circulation. Intravenous medications have
100% bioavailability, whereas oral medications typically have lower
bioavailability due to incomplete absorption and first-pass metabolism.
6. Which medication administration route completely avoids first-
pass metabolism?
A. Oral
B. Rectal
C. Intravenous
D. Gastric tube
Answer: C. Intravenous
