Practice Quiz

INBDE Integrated National Board Dental Exam Prep Set 2

Category - NBDE II

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In pharmacodynamics, an agonist is:
  1. Drugs that bind to cell receptors and triggers a physiological reaction
  2. Drugs to prevent receptors from binding and prevent physiological reactions
  3. Drugs to combine cell molecules with receptors
  4. Drugs that prevent receptors from binding, but still trigger a physiological reaction
Explanation
Answer: A - In pharmacodynamics, an agonist is a drug that binds to cell receptors and triggers a physiological reaction. The goal of the agonist is to stabilize their active conformation. There are two types of agonists, full and partial. Full agonists activate all or a portion of receptors for maximum response. Partial agonists cause less response, even if all receptors are active.
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