Pharmacology (2026) | Galen College of
Nursing | Complete Exam Questions & Verified
Answers with Detailed Rationales |
Comprehensive Study Guide | A+ Graded
Q1. Pharmacology is best defined as the study of:
A) The human body's structure and function
B) Drugs and their interactions with living systems
C) The art of preparing and dispensing medications
D) Poisons and their antidotes only
Correct Answer: B. Drugs and their interactions with
living systems
Rationale: Pharmacology is the broad scientific discipline
that examines how drugs affect biological systems and
how the body responds to drugs. This encompasses
everything from the drug's mechanism of action to its
therapeutic and adverse effects.
,Q2. Which term describes what the body does to a drug,
encompassing absorption, distribution, metabolism, and
excretion?
A) Pharmacodynamics
B) Pharmacotherapeutics
C) Pharmacokinetics
D) Toxicology
Correct Answer: C. Pharmacokinetics
Rationale: Pharmacokinetics is the study of drug
movement through the body, involving four key
processes: absorption, distribution, metabolism, and
excretion (ADME). Pharmacodynamics refers to what the
drug does to the body at the receptor level.
Q3. During the pharmacodynamic phase, the nurse is
assessing what process?
A) How the body absorbs, distributes, metabolizes, and
excretes a drug
B) What the drug does to the body
, C) The dissolution of the drug in the GI tract
D) The study of the drug's chemical structure
Correct Answer: B. What the drug does to the body
Rationale: Pharmacodynamics is the study of the drug's
mechanism of action and its effects on the body.
Pharmacokinetics (A) is what the body does to the drug.
The pharmaceutic phase (C) involves dissolution of the
drug.
Q4. A drug that binds to a receptor and produces a
therapeutic response is known as a(n):
A) Antagonist
B) Agonist
C) Partial antagonist
D) Placebo
Correct Answer: B. Agonist
Rationale: An agonist has both affinity for a receptor and
intrinsic efficacy, meaning it binds to the receptor and