,NU 150 Exam 1 | Pharmacology (2026/2027) PDF |
Nursing | Galen College
1. Which of the following best describes the primary focus of pharmacokinetics
in pharmacology?
A) The study of how drugs produce their therapeutic effects
B) The study of what the body does to a drug, including absorption, distribution,
metabolism, and excretion
C) The study of how drugs interact with receptors to cause responses
D) The study of the harmful effects of drugs on living organisms
Correct Answer: The study of what the body does to a drug, including
absorption, distribution, metabolism, and excretion
Rationale: Pharmacokinetics is the branch of pharmacology that examines the
movement of drugs through the body over time. It encompasses four main
processes: absorption, distribution, metabolism, and excretion.
Pharmacodynamics, by contrast, focuses on what the drug does to the body.
Understanding pharmacokinetics is essential for determining appropriate dosing
regimens and predicting drug behavior.
2. What is the primary function of an agonist drug at a receptor site?
A) To block the endogenous ligand from binding
B) To bind to the receptor and stimulate a biological response
C) To permanently deactivate the receptor
,D) To decrease the sensitivity of the receptor to other drugs
Correct Answer: To bind to the receptor and stimulate a biological response
Rationale: An agonist is a drug that binds to a receptor and activates it,
producing a physiological response similar to that of the body's natural ligand.
Agonists have both affinity for the receptor and intrinsic activity. Antagonists, in
contrast, bind to receptors but do not activate them, instead blocking the
effects of agonists. This distinction is fundamental to understanding drug action.
3. Which drug name is the official, nonproprietary name that remains consistent
regardless of the manufacturer?
A) Trade name
B) Generic name
C) Chemical name
D) Brand name
Correct Answer: Generic name
Rationale: The generic name is the official, nonproprietary name of a
medication and remains consistent across all manufacturers. The trade name
(also called brand name) is assigned by a specific company for marketing
purposes. The chemical name describes the drug's chemical structure and is
rarely used in clinical practice.
4. What is the primary purpose of the pharmaceutic phase of drug action?
, A) To describe how the drug is distributed to tissues
B) To describe how the drug is metabolized by the liver
C) To describe how the solid drug form disintegrates and dissolves
D) To describe how the drug is excreted by the kidneys
Correct Answer: To describe how the solid drug form disintegrates and dissolves
Rationale: The pharmaceutic phase is the first phase of drug action, during
which the solid drug form (tablet or capsule) disintegrates and dissolves in the
gastrointestinal tract so it can be absorbed. This phase applies primarily to oral
medications. Distribution, metabolism, and excretion occur in later phases.
5. Which organ is the major site of drug metabolism for most medications?
A) Kidneys
B) Liver
C) Lungs
D) Stomach
Correct Answer: Liver
Rationale: The liver is the primary organ responsible for metabolizing most
drugs. Hepatic enzymes chemically alter medications to prepare them for
elimination. The kidneys are primarily responsible for excretion, the lungs for
gas exchange, and the stomach for digestion and absorption.
Nursing | Galen College
1. Which of the following best describes the primary focus of pharmacokinetics
in pharmacology?
A) The study of how drugs produce their therapeutic effects
B) The study of what the body does to a drug, including absorption, distribution,
metabolism, and excretion
C) The study of how drugs interact with receptors to cause responses
D) The study of the harmful effects of drugs on living organisms
Correct Answer: The study of what the body does to a drug, including
absorption, distribution, metabolism, and excretion
Rationale: Pharmacokinetics is the branch of pharmacology that examines the
movement of drugs through the body over time. It encompasses four main
processes: absorption, distribution, metabolism, and excretion.
Pharmacodynamics, by contrast, focuses on what the drug does to the body.
Understanding pharmacokinetics is essential for determining appropriate dosing
regimens and predicting drug behavior.
2. What is the primary function of an agonist drug at a receptor site?
A) To block the endogenous ligand from binding
B) To bind to the receptor and stimulate a biological response
C) To permanently deactivate the receptor
,D) To decrease the sensitivity of the receptor to other drugs
Correct Answer: To bind to the receptor and stimulate a biological response
Rationale: An agonist is a drug that binds to a receptor and activates it,
producing a physiological response similar to that of the body's natural ligand.
Agonists have both affinity for the receptor and intrinsic activity. Antagonists, in
contrast, bind to receptors but do not activate them, instead blocking the
effects of agonists. This distinction is fundamental to understanding drug action.
3. Which drug name is the official, nonproprietary name that remains consistent
regardless of the manufacturer?
A) Trade name
B) Generic name
C) Chemical name
D) Brand name
Correct Answer: Generic name
Rationale: The generic name is the official, nonproprietary name of a
medication and remains consistent across all manufacturers. The trade name
(also called brand name) is assigned by a specific company for marketing
purposes. The chemical name describes the drug's chemical structure and is
rarely used in clinical practice.
4. What is the primary purpose of the pharmaceutic phase of drug action?
, A) To describe how the drug is distributed to tissues
B) To describe how the drug is metabolized by the liver
C) To describe how the solid drug form disintegrates and dissolves
D) To describe how the drug is excreted by the kidneys
Correct Answer: To describe how the solid drug form disintegrates and dissolves
Rationale: The pharmaceutic phase is the first phase of drug action, during
which the solid drug form (tablet or capsule) disintegrates and dissolves in the
gastrointestinal tract so it can be absorbed. This phase applies primarily to oral
medications. Distribution, metabolism, and excretion occur in later phases.
5. Which organ is the major site of drug metabolism for most medications?
A) Kidneys
B) Liver
C) Lungs
D) Stomach
Correct Answer: Liver
Rationale: The liver is the primary organ responsible for metabolizing most
drugs. Hepatic enzymes chemically alter medications to prepare them for
elimination. The kidneys are primarily responsible for excretion, the lungs for
gas exchange, and the stomach for digestion and absorption.
