Anaesthesia Mock Exam Questions & Answers Graded A 2025

When a nerve is in its resting state, the: A. K+ is concentrated outside the cell B. Cell membrane is positive on the outside of the cell C. Na+ is concentrated outside the cell D. Cell membrane is more positive on the inside of the cell - C. Na+ is concentrated outside the cell Which of the following maintains the resting potential of a nerve fiber? A. The K+ pump B. The Na+ pump C. The concentration gradient D. The electrical impulse - B. The Na+ pump Select the following anesthetic(s) available in the US that is(are) formulated with epinephrine 1:200,000 A. Lidocaine B. Mepivacaine C. Prilocaine D. Articaine E. C and D - E. C and D Which of the following anesthetics has the shortest duration when administering a local anesthetic block? A. Lidocaine 1:100,000 B. Mepivacaine 1:20,000 C. Mepivacaine 3% D. Prilocaine 4% - C. Mepivacaine 3% Levonordefrin