Erection Mechanism and Drug Interactions Quiz
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Questions and Answers

What is the physiologic mechanism of erection of the penis?

  • Release of testosterone in the corpus cavernosum
  • Release of nitric oxide in the corpus cavernosum (correct)
  • Release of estrogen in the corpus cavernosum
  • Release of adrenaline in the corpus cavernosum

    • What is the role of nitric oxide in the corpus cavernosum during sexual stimulation?

  • Stimulates inflammation in the corpus cavernosum
  • Enhances smooth muscle relaxation (correct)
  • Increases blood outflow from the corpus cavernosum
  • Promotes smooth muscle contraction

    • Which medication is contraindicated for concurrent use with nitrates, nitric oxide, or alpha-adrenergic blockers?

  • Estrogen supplement
  • Sildenafil citrate (Viagra)
  • Vardenafil (Levitra)
  • Tadalafil (Cialis) (correct)

    • What is the recommended dose and timing for sildenafil citrate (Viagra) for most patients?

    <p>50 mg taken 1 hour before sexual activity</p> Signup and view all the answers

    Under what conditions should tadalafil (Cialis) not be used?

    <p>Recent history of stroke</p> Signup and view all the answers

    What is the recommended dose and timing for vardenafil (Levitra) for most patients?

    <p>10 mg taken 24 hours before sexual activity</p> Signup and view all the answers

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