nu 636 advanced pharmacology exam herzing uni 2024
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NU 636
Advanced
Pharmacology
COMPLETED EXAM
2024
,1. Which of the following statements best describes pharmacokinetics?
a) The study of how drugs affect the body
b) The study of how the body absorbs, distributes, metabolizes, and
excretes drugs
c) The study of how drugs interact with each other and with other
substances
d) The study of how drugs are used to treat, prevent, or diagnose diseases
Answer: B. Pharmacokinetics is the study of how the body handles drugs,
including absorption, distribution, metabolism, and excretion.
Pharmacodynamics is the study of how drugs affect the body,
pharmacology is the study of drugs in general, and pharmacotherapeutics
is the study of how drugs are used for therapeutic purposes.
2. What is the difference between a drug's bioavailability and its
bioequivalence?
a) Bioavailability is the fraction of a drug that reaches the systemic
circulation, while bioequivalence is the similarity between two
formulations of the same drug in terms of bioavailability and
pharmacological effects
b) Bioavailability is the extent to which a drug produces its intended
effects, while bioequivalence is the equivalence between two formulations
of the same drug in terms of safety and efficacy
c) Bioavailability is the rate at which a drug is absorbed into the
bloodstream, while bioequivalence is the degree to which two
formulations of the same drug have the same pharmacokinetic parameters
d) Bioavailability is the concentration of a drug in the blood or tissues,
while bioequivalence is the interchangeability between two formulations
of the same drug in terms of dosage and administration
Answer: A. Bioavailability is the fraction of a drug that reaches the
systemic circulation after administration, which can be affected by factors
such as absorption, first-pass metabolism, and protein binding.
Bioequivalence is the similarity between two formulations of the same
, drug (e.g., generic and brand-name) in terms of bioavailability and
pharmacological effects, which implies that they can be used
interchangeably.
3. What are some factors that can affect drug absorption?
a) Drug solubility, pH, route of administration, blood flow, and surface
area
b) Drug polarity, molecular weight, formulation, food intake, and disease
states
c) Drug stability, ionization, dosage form, membrane permeability, and
interactions
d) All of the above
Answer: D. All of the above factors can affect drug absorption. Drug
solubility, polarity, stability, and ionization determine how well a drug
can dissolve in water or lipid environments and cross biological
membranes. Drug molecular weight and dosage form influence how fast a
drug can be absorbed. Drug formulation, route of administration, food
intake, blood flow, surface area, membrane permeability, disease states,
and interactions can alter the rate and extent of drug absorption.
1. A 65-year-old man with a history of hypertension, diabetes, and chronic
kidney disease is prescribed lisinopril, a type of angiotensin-converting
enzyme (ACE) inhibitor, to lower his blood pressure. What is the main
mechanism of action of lisinopril and why is it beneficial for this patient?
a) It blocks the production of angiotensin II, a potent vasoconstrictor, and
reduces the workload on the heart and kidneys.
b) It inhibits the breakdown of bradykinin, a vasodilator, and enhances the
effects of nitric oxide and prostaglandins on the blood vessels.
c) It antagonizes the effects of angiotensin II on the angiotensin II type 1
(AT1) receptors, and prevents vasoconstriction, sodium retention, and
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