Practice Quiz

ADA NBDE National Board Dental Part I

Category - NBDE

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Heparin is a rapidly acting, potent anticoagulant that has many important clinical uses. Which of the following is an action of heparin?
  1. activates prothrombin
  2. acts with antithrombin III to inhibit thrombin activity
  3. decreases prothrombin time
  4. inhibits calcium action
Explanation
Answer: B - Heparin acts as an anticoagulant because it accelerates the action of antithrombin III to inhibit thrombin activity.
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