1. What is the maximum nontoxic dose (in mg/kg) of lidocaine mixed with 1:100,000 epinephrine?
   • A. 2 to 4
   • B. 5 to 7
   • C. 9 to 11
   • D. 50 to 70
2. Which of the following is not an early complication of local anesthesia toxicity?
   • A. tinnitus
   • B. blurred vision
   • C. tremors
   • D. respiratory depression
3. Which of the following cleaves bonds between the moieties that form ground substance?
   • A. lidocaine
   • B. epinephrine
   • C. hyaluronidase
   • D. naloxone
4. Local anesthetics are thought to work via which of the following mechanisms?
   • A. sodium channels in cell walls
   • B. intracellular lysosomes
   • C. nuclear membrane receptors
   • D. potassium channels in cell walls
5. Cutaneous sensory nerves of the face are predominantly of which type?
   • A. A
   • B. B
   • C. C
   • D. D

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