Midterm Exam: NR566 / NR 566 (2025 /
2026) – Advanced Pharmacology for Care of
the Family | Chamberlain University | Exam
Study Guide | Verified Questions and
Answers | Grade A | 100% Correct
MODULE 1: PHARMACOKINETICS & PHARMACODYNAMICS (Q1–10)
Q1. What are the four main processes of pharmacokinetics? The four main processes are
absorption, distribution, metabolism, and excretion. Rationale: ADME determines drug
concentration over time and therapeutic effect.
Q2. What is the primary site of drug metabolism in the body? The liver is the primary site of
drug metabolism. Rationale: Cytochrome P450 enzymes (CYP3A4, CYP2D6) in hepatocytes.
Q3. What does first-pass effect refer to in oral drug administration? First-pass effect refers to
hepatic metabolism before drug reaches systemic circulation. Rationale: Reduces
bioavailability of drugs like propranolol, morphine.
Q4. What is the definition of volume of distribution (Vd)? Volume of distribution is the
theoretical volume that would contain the total drug dose at the same concentration as in
plasma. Rationale: Vd = Dose / Cp; high Vd (e.g., digoxin) = tissue binding.
Q5. What is the clinical significance of a drug with a narrow therapeutic index? Narrow
therapeutic index drugs require close monitoring due to small margin between efficacy and
toxicity. Rationale: Examples: warfarin, digoxin, lithium.
, Q6. What is the difference between zero-order and first-order elimination? Zero-order
elimination is constant amount per time; first-order is proportional to concentration.
Rationale: Zero-order: phenytoin, ethanol; first-order: most drugs.
Q7. What receptor interaction results in maximal response with partial agonists? Partial
agonists produce submaximal response even at full receptor occupancy. Rationale: Lower
intrinsic activity than full agonists (e.g., buprenorphine vs. morphine).
Q8. What is the potency of a drug dependent on? Potency depends on receptor affinity and
dose required for effect. Rationale: EC50; lower EC50 = higher potency (e.g., fentanyl >
morphine).
Q9. What is the primary mechanism of enzyme induction in drug interactions? Enzyme
induction increases synthesis of metabolizing enzymes. Rationale: Rifampin induces
CYP3A4 → decreases warfarin effect.
Q10. What is the clinical implication of a drug with high protein binding? High protein binding
limits free drug available for action and increases displacement interactions. Rationale:
Warfarin 99% bound; displaced by aspirin → bleeding risk.
MODULE 2: AUTONOMIC NERVOUS SYSTEM (Q11–20)
Q11. What is the primary neurotransmitter of the parasympathetic nervous system?
Acetylcholine is the primary neurotransmitter. Rationale: Acts on muscarinic (M1–M5) and
nicotinic receptors.
Q12. What is the mechanism of action of atropine? Atropine is a competitive muscarinic
receptor antagonist. Rationale: Blocks ACh → mydriasis, tachycardia, dry mouth.
Q13. What is the therapeutic use of beta-2 agonists in asthma? Beta-2 agonists cause
bronchodilation via increased cAMP. Rationale: Albuterol activates Gs protein → smooth
muscle relaxation.
2026) – Advanced Pharmacology for Care of
the Family | Chamberlain University | Exam
Study Guide | Verified Questions and
Answers | Grade A | 100% Correct
MODULE 1: PHARMACOKINETICS & PHARMACODYNAMICS (Q1–10)
Q1. What are the four main processes of pharmacokinetics? The four main processes are
absorption, distribution, metabolism, and excretion. Rationale: ADME determines drug
concentration over time and therapeutic effect.
Q2. What is the primary site of drug metabolism in the body? The liver is the primary site of
drug metabolism. Rationale: Cytochrome P450 enzymes (CYP3A4, CYP2D6) in hepatocytes.
Q3. What does first-pass effect refer to in oral drug administration? First-pass effect refers to
hepatic metabolism before drug reaches systemic circulation. Rationale: Reduces
bioavailability of drugs like propranolol, morphine.
Q4. What is the definition of volume of distribution (Vd)? Volume of distribution is the
theoretical volume that would contain the total drug dose at the same concentration as in
plasma. Rationale: Vd = Dose / Cp; high Vd (e.g., digoxin) = tissue binding.
Q5. What is the clinical significance of a drug with a narrow therapeutic index? Narrow
therapeutic index drugs require close monitoring due to small margin between efficacy and
toxicity. Rationale: Examples: warfarin, digoxin, lithium.
, Q6. What is the difference between zero-order and first-order elimination? Zero-order
elimination is constant amount per time; first-order is proportional to concentration.
Rationale: Zero-order: phenytoin, ethanol; first-order: most drugs.
Q7. What receptor interaction results in maximal response with partial agonists? Partial
agonists produce submaximal response even at full receptor occupancy. Rationale: Lower
intrinsic activity than full agonists (e.g., buprenorphine vs. morphine).
Q8. What is the potency of a drug dependent on? Potency depends on receptor affinity and
dose required for effect. Rationale: EC50; lower EC50 = higher potency (e.g., fentanyl >
morphine).
Q9. What is the primary mechanism of enzyme induction in drug interactions? Enzyme
induction increases synthesis of metabolizing enzymes. Rationale: Rifampin induces
CYP3A4 → decreases warfarin effect.
Q10. What is the clinical implication of a drug with high protein binding? High protein binding
limits free drug available for action and increases displacement interactions. Rationale:
Warfarin 99% bound; displaced by aspirin → bleeding risk.
MODULE 2: AUTONOMIC NERVOUS SYSTEM (Q11–20)
Q11. What is the primary neurotransmitter of the parasympathetic nervous system?
Acetylcholine is the primary neurotransmitter. Rationale: Acts on muscarinic (M1–M5) and
nicotinic receptors.
Q12. What is the mechanism of action of atropine? Atropine is a competitive muscarinic
receptor antagonist. Rationale: Blocks ACh → mydriasis, tachycardia, dry mouth.
Q13. What is the therapeutic use of beta-2 agonists in asthma? Beta-2 agonists cause
bronchodilation via increased cAMP. Rationale: Albuterol activates Gs protein → smooth
muscle relaxation.
