KROK 1 Stomatology 2015 – Question 199 · KROK (Dentistry)
Novocaine acts as an anesthetic by making nerve fibers unable to conduct stimulation. What mechanism of action regarding membrane’s permeability to ions does this drug have?
- A. Sodium-proton pump blockade
- B. Sodium ion-selective channels blockade
- C. Potassium ion-selective channels blockade
- D. Calcium ion-selective channels blockade
- E. Sodium-potassium pump blockade
Hint
Consider which ion current produces the rising phase of the action potential and must be prevented for conduction to stop.
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