study questions Flashcards
Isoproterenol produces maximal contraction of cardiac muscle in a manner similar to epinephrine. Which of the following best describes Isoproterenol?
FULL AGONIST
If 10 mg of naproxen produces the same analgesic response as 100 mg of ibuprofen, which of the following statements is correct?
Naproxen is more potent than ibuprofen.
If 10 mg of morphine produces a greater analgesic response than can be achieved by ibuprofen at any dose, which of the following statements is correct?
Morphine is a better drug to take for pain relief than is ibuprofen.
In the presence of naloxone, a higher concentration of morphine is required to elicit full pain rellef. Naloxone by Itself has no effect. Which of the following is correct regarding these medications?
Naloxone Is a competitive antagonist.
In the presence of pentazocine, a higher concentration of morphine is required to elicit full pain relief. Pentazocine by itself has a smaller analgesic effect than does morphine, even at the highest dose. Which of the following is correct regarding these medications?
Morphine is a full agonist, and pentazocine is a partial agonist.
In the presence of picrotoxin, diazepam Is less efficacious at causing sedation, regardless of the dose. Picrotoxin by Itself has no sedative effect even at the highest dose.
Which of the following Is correct?
Picrotoxin Is a noncompetitive antagonist.
Which of the following statements most accurately describes a system having spare receptors?
A single drug receptor interaction results in many cellular response elements being activated.
Which of the following would up-regulate postsynaptic B1, adrenergic receptors?
Daily use of propranolol, a B1, receptor antagonist.
