Dental Board Exams Part I - Question List

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6. 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
7. Which of the following layers of the heart is primarily composed of cardiac muscle?
  1. Epicardium
  2. Myocardium
  3. Pericardium
  4. Endocardium
8. About 75% of the blood supply of the spinal cord is derived from the anterior spinal artery. This artery originates from which of the following?
  1. Basilar artery
  2. Internal carotid artery
  3. Posterior inferior cerebellar artery
  4. Vertebral artery
9. Which cell organelle is involved in concentration packaging and transportation of secretory material inside the cell?
  1. Golgi complex
  2. Mitochondria
  3. Ribosomes
  4. Endoplasmic reticulum
10. Which of the following drugs is NOT a calcium channel blocker?
  1. Nifedipine
  2. Verapamil
  3. Amplodipine
  4. Metoprolol

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