Comprehensive Test Bank & Practical Review with Rationales (2025–2026)
,Introduction to Drugs and Pharmacology
1. Which of the following best defines pharmacology?
A. The study of anatomy and physiology
B. The study of drugs and their effects on the body
C. The study of nursing ethics
D. The study of surgical techniques
Answer: B
Explanation: Pharmacology is the science of drugs, including their sources, chemical
properties, actions, and effects on the body.
2. What is the primary role of the nurse in pharmacology?
A. Prescribing medications
B. Administering and monitoring medications for safety and effectiveness
C. Manufacturing drugs
D. Performing lab tests
Answer: B
Explanation: Nurses do not prescribe medications (except nurse practitioners in some
regions) but are responsible for safe administration, monitoring for effects, and patient
education.
3. Which of the following describes a “therapeutic effect” of a drug?
A. The expected and intended effect of a drug
B. A dangerous reaction to a drug
C. A mild side effect that is tolerable
D. An unpredictable, rare reaction
Answer: A
Explanation: The therapeutic effect is the intended clinical outcome for which the drug is
prescribed.
4. A patient reports nausea after taking a new medication. This is an example of:
A. Therapeutic effect
B. Adverse effect
C. Placebo effect
D. Drug tolerance
Answer: B
Explanation: An adverse effect is an unintended, harmful effect of a drug that occurs at
normal doses.
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,5. Which factor can influence drug absorption in patients?
A. Age
B. Nutrition
C. Gastrointestinal motility
D. All of the above
Answer: D
Explanation: Absorption is affected by multiple factors including age, diet, GI motility, pH,
and presence of other medications.
6. Pharmacokinetics is the study of:
A. How drugs move through the body
B. How drugs are discovered in labs
C. The chemical composition of drugs
D. Legal regulations for prescribing
Answer: A
Explanation: Pharmacokinetics focuses on absorption, distribution, metabolism, and
excretion of drugs (ADME).
7. Which of the following routes of administration provides the fastest onset of
action?
A. Oral
B. Intravenous (IV)
C. Subcutaneous injection
D. Topical
Answer: B
Explanation: IV administration delivers the drug directly into circulation, providing
immediate effects.
8. A “black box warning” on a drug label indicates:
A. The drug is safe for everyone
B. There is a serious risk associated with the drug
C. The drug has no known side effects
D. The drug is over-the-counter
Answer: B
Explanation: A black box warning highlights significant risks of severe adverse effects or
death associated with a drug.
9. Which term describes a decrease in drug responsiveness over time?
A. Synergism
B. Antagonism
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, C. Tolerance
D. Potentiation
Answer: C
Explanation: Tolerance occurs when repeated exposure to a drug reduces its effect,
requiring higher doses to achieve the same response.
10. Evidence-based nursing practice in pharmacology involves:
A. Using drugs only according to tradition
B. Applying clinical research findings to patient care
C. Administering medications without documentation
D. Relying solely on the physician’s judgment
Answer: B
Explanation: Evidence-based practice integrates clinical research, patient preferences,
and clinical expertise to optimize care.
11. Which term refers to the study of how drugs affect the body?
A. Pharmacokinetics
B. Pharmacodynamics
C. Toxicology
D. Pathophysiology
Answer: B
Explanation: Pharmacodynamics is the study of the biochemical and physiological effects
of drugs and their mechanisms of action.
12. The first-pass effect primarily affects which route of drug administration?
A. Oral
B. Intravenous
C. Subcutaneous
D. Intramuscular
Answer: A
Explanation: Drugs administered orally pass through the liver before reaching systemic
circulation, which can reduce bioavailability.
13. Which organ is primarily responsible for drug metabolism?
A. Kidneys
B. Liver
C. Lungs
D. Spleen
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