MARYVILLE UNIVERSITY PHARMACOLOGY CONCEPTS EXAM 2025 |140
QUESTIONS WITH ACCURATE SOLUTIONS
1. What type of solubility allows a drug to easily cross cell membranes?
Lipid solubility
Water solubility
Protein solubility
Salt solubility
2. Where are alpha 1 receptors primarily found in the body?
Vascular smooth muscle
Cardiac muscle
Nerve endings
Liver cells
3. If a physician is treating a hypertensive African American patient, which
medication should they consider as a first-line option based on current
pharmacological guidelines?
Coreg
Hydrochlorothiazide
Amlodipine
Ramipril
4. In a reaction where hydrochloric acid (HCl) is mixed with sodium
hydroxide (NaOH), what is the primary species that HCl donates to
NaOH?
Hydrogen ions
Sodium ions
, Chloride ions
Water molecules
5. What does the Henderson-Hasselbalch equation help to determine in
pharmacology?
The relationship between pH and pKa
The solubility of drugs
The absorption rate of medications
The metabolism of drugs
6. A patient has missed several doses of clonidine and decides to stop
taking it altogether. What potential consequence should the healthcare
provider warn the patient about?
Increased risk of stroke due to rebound hypertension.
Immediate withdrawal symptoms like nausea.
Increased effectiveness of the medication.
No significant consequences if stopped.
7. A drug will cross cell membranes better if it is in the following form.
Lipid soluble form
Water soluble form
8. Describe the significance of the different types of beta receptors in
pharmacology.
The different types of beta receptors play distinct roles in
mediating physiological responses to drugs.
All beta receptors have the same function in drug action.
Beta receptors are only involved in the metabolism of drugs.
, Beta receptors do not influence drug interactions.
9. Why are beta blockers contraindicated in patients with asthma?
Beta blockers can cause bronchoconstriction, worsening asthma
symptoms.
Beta blockers increase heart rate, which is harmful in asthma.
Beta blockers have no effect on asthma symptoms.
Beta blockers are used to treat asthma.
10. Describe the role of Norepinephrine in the management of hypotensive
shock.
Norepinephrine is used to increase vascular tone and blood
pressure in patients experiencing hypotensive shock.
Norepinephrine decreases heart rate to manage hypotensive
shock.
Norepinephrine acts as a sedative in hypotensive shock.
Norepinephrine is primarily used for pain relief in hypotensive
shock.
11. Describe the significance of alpha 1 receptors in the vascular system.
Alpha 1 receptors play a crucial role in regulating vascular tone
and blood pressure by causing vasoconstriction when
activated.
Alpha 1 receptors are primarily involved in neurotransmitter
release in the brain.
Alpha 1 receptors are responsible for increasing heart rate during
stress.
Alpha 1 receptors facilitate the absorption of nutrients in the
intestines.
, 12. A patient in the emergency department presents with severe
hypotension due to septic shock. How would the administration of
Norepinephrine affect this patient's condition?
It would increase blood pressure and improve perfusion.
It would decrease heart rate and worsen perfusion.
It would have no effect on blood pressure.
It would cause hypotension.
13. When a drug is metabolised by the liver, and the metabolite excreted by
kidney, renal insufficiency can lead to
increased plasma concentrations and adverse effects
decreased plasma concentrations and normal drug excretion
14. Describe the mechanism by which Alpha 2 receptors contribute to
blood pressure regulation.
Alpha 2 receptors lower blood pressure by reducing
sympathetic function, leading to compensatory effects such as
sodium retention and increased blood volume.
Alpha 2 receptors increase blood pressure by enhancing
sympathetic activity and decreasing blood volume.
Alpha 2 receptors have no effect on blood pressure regulation.
Alpha 2 receptors primarily affect the heart rate without
impacting blood pressure.
15. A patient on hormonal birth control is considering taking St. John's Wort
for depression. What should the healthcare provider advise regarding
this combination?
The provider should advise against using St. John's Wort with
hormonal birth control due to the risk of decreased
contraceptive efficacy.
QUESTIONS WITH ACCURATE SOLUTIONS
1. What type of solubility allows a drug to easily cross cell membranes?
Lipid solubility
Water solubility
Protein solubility
Salt solubility
2. Where are alpha 1 receptors primarily found in the body?
Vascular smooth muscle
Cardiac muscle
Nerve endings
Liver cells
3. If a physician is treating a hypertensive African American patient, which
medication should they consider as a first-line option based on current
pharmacological guidelines?
Coreg
Hydrochlorothiazide
Amlodipine
Ramipril
4. In a reaction where hydrochloric acid (HCl) is mixed with sodium
hydroxide (NaOH), what is the primary species that HCl donates to
NaOH?
Hydrogen ions
Sodium ions
, Chloride ions
Water molecules
5. What does the Henderson-Hasselbalch equation help to determine in
pharmacology?
The relationship between pH and pKa
The solubility of drugs
The absorption rate of medications
The metabolism of drugs
6. A patient has missed several doses of clonidine and decides to stop
taking it altogether. What potential consequence should the healthcare
provider warn the patient about?
Increased risk of stroke due to rebound hypertension.
Immediate withdrawal symptoms like nausea.
Increased effectiveness of the medication.
No significant consequences if stopped.
7. A drug will cross cell membranes better if it is in the following form.
Lipid soluble form
Water soluble form
8. Describe the significance of the different types of beta receptors in
pharmacology.
The different types of beta receptors play distinct roles in
mediating physiological responses to drugs.
All beta receptors have the same function in drug action.
Beta receptors are only involved in the metabolism of drugs.
, Beta receptors do not influence drug interactions.
9. Why are beta blockers contraindicated in patients with asthma?
Beta blockers can cause bronchoconstriction, worsening asthma
symptoms.
Beta blockers increase heart rate, which is harmful in asthma.
Beta blockers have no effect on asthma symptoms.
Beta blockers are used to treat asthma.
10. Describe the role of Norepinephrine in the management of hypotensive
shock.
Norepinephrine is used to increase vascular tone and blood
pressure in patients experiencing hypotensive shock.
Norepinephrine decreases heart rate to manage hypotensive
shock.
Norepinephrine acts as a sedative in hypotensive shock.
Norepinephrine is primarily used for pain relief in hypotensive
shock.
11. Describe the significance of alpha 1 receptors in the vascular system.
Alpha 1 receptors play a crucial role in regulating vascular tone
and blood pressure by causing vasoconstriction when
activated.
Alpha 1 receptors are primarily involved in neurotransmitter
release in the brain.
Alpha 1 receptors are responsible for increasing heart rate during
stress.
Alpha 1 receptors facilitate the absorption of nutrients in the
intestines.
, 12. A patient in the emergency department presents with severe
hypotension due to septic shock. How would the administration of
Norepinephrine affect this patient's condition?
It would increase blood pressure and improve perfusion.
It would decrease heart rate and worsen perfusion.
It would have no effect on blood pressure.
It would cause hypotension.
13. When a drug is metabolised by the liver, and the metabolite excreted by
kidney, renal insufficiency can lead to
increased plasma concentrations and adverse effects
decreased plasma concentrations and normal drug excretion
14. Describe the mechanism by which Alpha 2 receptors contribute to
blood pressure regulation.
Alpha 2 receptors lower blood pressure by reducing
sympathetic function, leading to compensatory effects such as
sodium retention and increased blood volume.
Alpha 2 receptors increase blood pressure by enhancing
sympathetic activity and decreasing blood volume.
Alpha 2 receptors have no effect on blood pressure regulation.
Alpha 2 receptors primarily affect the heart rate without
impacting blood pressure.
15. A patient on hormonal birth control is considering taking St. John's Wort
for depression. What should the healthcare provider advise regarding
this combination?
The provider should advise against using St. John's Wort with
hormonal birth control due to the risk of decreased
contraceptive efficacy.
