PN 2005 DRUGS EXAM QUESTIONS AND
ANSWERS. VERIFIED 2026.
Midazolam - ANS May potentiate the effects of GABA, depress the central nervous system,
and suppress the spread of seizure activity.
Morphine - ANS Uknown. Binds with opioid receptors in the central feverous system, altering
perceptions of and emotional response to pain.
Naloxone - ANS May displace opioid analgesics from their receptors (competitive
antagonism); drug has no pharmacologic activity of its own.
Nitrofurantoin - ANS May interfere with bacterial enzymes systems and bacterial cell-wall
formation.
Nitroglycerin - ANS Reduces cardiac oxygen demand by decreasing left ventricular end-
diastolic pressure (preload) and, to a lesser extent, systemic vascular resistance (afterload). Also
increases blood flow through the collateral coronary vessels.
Nystatin - ANS Probably binds to sterols in fungal cell membrane, altering cell permeability
and allowing leakage of intercellular components.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Omeprazole - ANS Inhibits proton pump activity by binding to hydrogen-potassium adenosine
triphosphatase, located at secretory surface of gastric parietal cells, to suppress gastric acid
secretion.
Oxytocin - ANS Cause potent and selective stimulation of uterine and mammary gland
smooth muscles.
Dilantin - Phenytoin - ANS May stabilize neuronal membranes and limit seizure activity either
by increasing efflux or decreasing influx of sodium ions across cell membranes in the motor
cortex during generation of nerve impulses.
Phenobarbital - ANS Increases the amount of time chloride channels are open which in turn
depresses the central nervous system. Done by acting on GABA-A receptor subunits.
Potassium Acetate/Chloride - ANS Replaces potassium and maintains potassium levels
Prednisone - ANS Not clearly defined. Decreases inflammation, mainly by stabilizing
leukocyte lysosomal membranes; suppresses immune response; stimulates bone marrow; and
influences protein, fat, and carbohydrate metabolism.
Propranolol Hydrochloride - ANS Reduces cardio oxygen demand by blocking catecholamine-
induced increases in HR, BP and force of myocardial contraction. Drug depresses renin secretion
and prevents vasodilation of cerebral arteries.
Pseudoephedrine Hydrochloride - ANS Acts on alpha-adrenergic receptors in the mucosa of
the respiratory tract, producing vasoconstriction.
Psyllium (Metamucil) - ANS mucilage is to absorb excess water while stimulating normal
bowel elimination
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS. VERIFIED 2026.
Midazolam - ANS May potentiate the effects of GABA, depress the central nervous system,
and suppress the spread of seizure activity.
Morphine - ANS Uknown. Binds with opioid receptors in the central feverous system, altering
perceptions of and emotional response to pain.
Naloxone - ANS May displace opioid analgesics from their receptors (competitive
antagonism); drug has no pharmacologic activity of its own.
Nitrofurantoin - ANS May interfere with bacterial enzymes systems and bacterial cell-wall
formation.
Nitroglycerin - ANS Reduces cardiac oxygen demand by decreasing left ventricular end-
diastolic pressure (preload) and, to a lesser extent, systemic vascular resistance (afterload). Also
increases blood flow through the collateral coronary vessels.
Nystatin - ANS Probably binds to sterols in fungal cell membrane, altering cell permeability
and allowing leakage of intercellular components.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Omeprazole - ANS Inhibits proton pump activity by binding to hydrogen-potassium adenosine
triphosphatase, located at secretory surface of gastric parietal cells, to suppress gastric acid
secretion.
Oxytocin - ANS Cause potent and selective stimulation of uterine and mammary gland
smooth muscles.
Dilantin - Phenytoin - ANS May stabilize neuronal membranes and limit seizure activity either
by increasing efflux or decreasing influx of sodium ions across cell membranes in the motor
cortex during generation of nerve impulses.
Phenobarbital - ANS Increases the amount of time chloride channels are open which in turn
depresses the central nervous system. Done by acting on GABA-A receptor subunits.
Potassium Acetate/Chloride - ANS Replaces potassium and maintains potassium levels
Prednisone - ANS Not clearly defined. Decreases inflammation, mainly by stabilizing
leukocyte lysosomal membranes; suppresses immune response; stimulates bone marrow; and
influences protein, fat, and carbohydrate metabolism.
Propranolol Hydrochloride - ANS Reduces cardio oxygen demand by blocking catecholamine-
induced increases in HR, BP and force of myocardial contraction. Drug depresses renin secretion
and prevents vasodilation of cerebral arteries.
Pseudoephedrine Hydrochloride - ANS Acts on alpha-adrenergic receptors in the mucosa of
the respiratory tract, producing vasoconstriction.
Psyllium (Metamucil) - ANS mucilage is to absorb excess water while stimulating normal
bowel elimination
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
