NR 546 ADVANCED PHARMACOLOGY: PSYCHOPHARMACOLOGY
FOR THE PMHNP MIDTERM EXAM COMPLETE TEST BANK
QUESTIONS WITH VERIFIED ANSWERS & DETAILED RATIONALES
WEEKS 1–4 | CHAMBERLAIN UNIVERSITY | 2026/2027 UPDATE
Question 1
What is pharmacokinetics?
A) What the drug does to the body
B) What the body does to the drug
C) The study of drug interactions
D) The study of drug side effects
Answer
Answer: B
Rationale
Pharmacokinetics describes the movement and fate of a drug in the body, encompassing absorption,
distribution, metabolism, and excretion (ADME). It determines how much drug reaches its target site
and for how long.
Question 2
What is pharmacodynamics?
A) What the drug does to the body
B) What the body does to the drug
C) The study of drug storage
D) The study of drug costs
Answer
Answer: A
Rationale
Pharmacodynamics describes the biochemical and physiological effects of a drug at its site of action,
including receptor binding, signal transduction, and the resulting therapeutic or adverse effects.
,Question 3
What is bioavailability?
A) The fraction of an administered dose that reaches systemic circulation unchanged
B) The rate of drug excretion
C) The volume of drug distribution
D) The half-life of a drug
Answer
Answer: A
Rationale
Bioavailability reflects how much of a drug enters the systemic circulation in an active form.
Intravenous administration has 100% bioavailability, while oral drugs have variable bioavailability due
to first-pass metabolism.
Question 4
What is first-pass metabolism?
A) Metabolism of a drug in the liver before it reaches systemic circulation
B) Metabolism of a drug in the kidney
C) Metabolism of a drug in the lungs
D) Metabolism of a drug in the brain
Answer
Answer: A
Rationale
First-pass metabolism occurs when orally administered drugs are absorbed from the GI tract and
transported to the liver via the portal vein, where they are metabolized before entering systemic
circulation, reducing bioavailability.
Question 5
What is the volume of distribution?
2
,A) The volume of plasma in the body
B) The theoretical volume into which a drug distributes in the body
C) The volume of urine produced
D) The volume of drug excreted
Answer
Answer: B
Rationale
Volume of distribution (Vd) is a theoretical measure of how widely a drug distributes into body tissues
relative to plasma. High Vd indicates extensive tissue distribution, while low Vd indicates confinement
to plasma.
Question 6
What does a drug's half-life represent?
A) Time to reach peak plasma concentration
B) Time for plasma concentration to decrease by 50%
C) Time for complete drug elimination
D) Time for drug absorption
Answer
Answer: B
Rationale
Half-life (t½) is the time required for the plasma concentration of a drug to decline by half. It
determines dosing frequency and the time to reach steady state (approximately 5 half-lives).
Question 7
How many half-lives are required to reach steady-state plasma concentration?
A) 1–2
B) 3–4
C) 5–7
D) 10–12
3
, Answer
Answer: C
Rationale
Steady-state plasma concentration is typically reached after approximately 5–7 half-lives of regular
dosing, when the rate of drug administration equals the rate of elimination.
Question 8
What is clearance?
A) The volume of plasma cleared of drug per unit time
B) The amount of drug absorbed
C) The volume of drug distributed
D) The rate of drug metabolism only
Answer
Answer: A
Rationale
Clearance (CL) is the volume of plasma from which a drug is completely removed per unit time. It
reflects the efficiency of drug elimination by the liver, kidneys, and other organs.
Question 9
What is a loading dose?
A) A dose given to rapidly achieve therapeutic drug levels
B) A maintenance dose
C) A dose given for side effects
D) A dose given for allergies
Answer
Answer: A
Rationale
A loading dose is an initial higher dose that rapidly achieves therapeutic plasma concentrations,
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FOR THE PMHNP MIDTERM EXAM COMPLETE TEST BANK
QUESTIONS WITH VERIFIED ANSWERS & DETAILED RATIONALES
WEEKS 1–4 | CHAMBERLAIN UNIVERSITY | 2026/2027 UPDATE
Question 1
What is pharmacokinetics?
A) What the drug does to the body
B) What the body does to the drug
C) The study of drug interactions
D) The study of drug side effects
Answer
Answer: B
Rationale
Pharmacokinetics describes the movement and fate of a drug in the body, encompassing absorption,
distribution, metabolism, and excretion (ADME). It determines how much drug reaches its target site
and for how long.
Question 2
What is pharmacodynamics?
A) What the drug does to the body
B) What the body does to the drug
C) The study of drug storage
D) The study of drug costs
Answer
Answer: A
Rationale
Pharmacodynamics describes the biochemical and physiological effects of a drug at its site of action,
including receptor binding, signal transduction, and the resulting therapeutic or adverse effects.
,Question 3
What is bioavailability?
A) The fraction of an administered dose that reaches systemic circulation unchanged
B) The rate of drug excretion
C) The volume of drug distribution
D) The half-life of a drug
Answer
Answer: A
Rationale
Bioavailability reflects how much of a drug enters the systemic circulation in an active form.
Intravenous administration has 100% bioavailability, while oral drugs have variable bioavailability due
to first-pass metabolism.
Question 4
What is first-pass metabolism?
A) Metabolism of a drug in the liver before it reaches systemic circulation
B) Metabolism of a drug in the kidney
C) Metabolism of a drug in the lungs
D) Metabolism of a drug in the brain
Answer
Answer: A
Rationale
First-pass metabolism occurs when orally administered drugs are absorbed from the GI tract and
transported to the liver via the portal vein, where they are metabolized before entering systemic
circulation, reducing bioavailability.
Question 5
What is the volume of distribution?
2
,A) The volume of plasma in the body
B) The theoretical volume into which a drug distributes in the body
C) The volume of urine produced
D) The volume of drug excreted
Answer
Answer: B
Rationale
Volume of distribution (Vd) is a theoretical measure of how widely a drug distributes into body tissues
relative to plasma. High Vd indicates extensive tissue distribution, while low Vd indicates confinement
to plasma.
Question 6
What does a drug's half-life represent?
A) Time to reach peak plasma concentration
B) Time for plasma concentration to decrease by 50%
C) Time for complete drug elimination
D) Time for drug absorption
Answer
Answer: B
Rationale
Half-life (t½) is the time required for the plasma concentration of a drug to decline by half. It
determines dosing frequency and the time to reach steady state (approximately 5 half-lives).
Question 7
How many half-lives are required to reach steady-state plasma concentration?
A) 1–2
B) 3–4
C) 5–7
D) 10–12
3
, Answer
Answer: C
Rationale
Steady-state plasma concentration is typically reached after approximately 5–7 half-lives of regular
dosing, when the rate of drug administration equals the rate of elimination.
Question 8
What is clearance?
A) The volume of plasma cleared of drug per unit time
B) The amount of drug absorbed
C) The volume of drug distributed
D) The rate of drug metabolism only
Answer
Answer: A
Rationale
Clearance (CL) is the volume of plasma from which a drug is completely removed per unit time. It
reflects the efficiency of drug elimination by the liver, kidneys, and other organs.
Question 9
What is a loading dose?
A) A dose given to rapidly achieve therapeutic drug levels
B) A maintenance dose
C) A dose given for side effects
D) A dose given for allergies
Answer
Answer: A
Rationale
A loading dose is an initial higher dose that rapidly achieves therapeutic plasma concentrations,
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