NURS 615 Pharmacology Exam 1 Questions with Complete Solutions (Latest 2025)
Section 1: General Pharmacology
1.Which of the following is the primary site of drug metabolism in the body?oA) Kidneys oB) Liver oC) Lungs oD) Small intestine
Answer: B) Liver
Rationale: The liver is the primary site for drug metabolism. It contains
enzymes, such as cytochrome P450, that alter the chemical structure of drugs, making them easier to excrete.
2.A drug that binds to a receptor and activates the receptor to
produce a response is called a:
oA) Antagonist oB) Agonist oC) Enzyme inhibitor oD) Transporter
Answer: B) Agonist
Rationale: An agonist binds to a receptor and activates it, leading to a
physiological response. In contrast, an antagonist binds to the receptor but does not activate it, instead blocking the action of other substances.
3.The half-life of a drug refers to:
oA) The time it takes for the drug to reach peak plasma concentration oB) The time it takes for the body to metabolize half of the drug oC) The time it takes for the drug to be eliminated from the body oD) The time it takes for half of the drug to be eliminated from the body 1 / 3
NURS 615 Pharmacology Exam 1 Questions with Complete Solutions (Latest 2025)
Answer: D) The time it takes for half of the drug to be eliminated from the
body
Rationale: Half-life refers to the time required for the plasma concentration
of a drug to reduce by 50%. It is an important pharmacokinetic parameter that influences dosing intervals.
4.Which of the following factors does NOT typically affect drug absorption?oA) Blood flow to the site of administration oB) pH of the stomach oC) Protein binding of the drug oD) Surface area of the absorption site
Answer: C) Protein binding of the drug
Rationale: Protein binding affects drug distribution, not absorption. Blood
flow, pH, and surface area significantly influence the absorption of drugs, particularly when taken orally.
Section 2: Autonomic Nervous System Pharmacology
5.A patient receiving a beta-blocker is most likely being treated for which of the following conditions?oA) Hypertension oB) Asthma oC) Parkinson's disease oD) Hyperthyroidism
Answer: A) Hypertension
Rationale: Beta-blockers are commonly used to treat hypertension, as they
block beta-adrenergic receptors, reducing heart rate and blood pressure.They may also be used for conditions like angina and arrhythmias.
6.Which of the following is a characteristic of alpha-1 adrenergic agonists? 2 / 3
NURS 615 Pharmacology Exam 1 Questions with Complete Solutions (Latest 2025) oA) Increased heart rate oB) Vasoconstriction oC) Bronchodilation oD) Decreased blood pressure
Answer: B) Vasoconstriction
Rationale: Alpha-1 adrenergic agonists cause vasoconstriction by
stimulating alpha-1 receptors on smooth muscle, leading to increased blood pressure.
7.Atropine is used to treat bradycardia because it:
oA) Increases acetylcholine at the muscarinic receptors oB) Increases sympathetic activity at beta receptors oC) Blocks muscarinic receptors, leading to an increase in heart rate oD) Blocks alpha receptors, leading to vasodilation
Answer: C) Blocks muscarinic receptors, leading to an increase in heart rate
Rationale: Atropine is an anticholinergic drug that blocks muscarinic
receptors in the heart, preventing the vagal (parasympathetic) influence and increasing heart rate in cases of bradycardia.
8.Which of the following medications is most commonly used to reverse the effects of opioid overdose?oA) Naloxone oB) Acetaminophen oC) Flumazenil oD) Atropine
Answer: A) Naloxone
Rationale: Naloxone is an opioid antagonist used to reverse the effects of
opioid overdose, including respiratory depression and sedation.
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