Cocaine selectively blocks Na+ (sodium) channels, which is the mechanism that leads to which of the following?
A) CNS stimulation.
B) Increased heart rate.
C) Local anesthetic effects.
D) Cocaine dependence.

Question

Quizplus · Accepted Answer

Cocaine's ability to block sodium channels is primarily responsible for its local anesthetic effects. This blockade prevents the initiation and conduction of nerve impulses, leading to a loss of sensation in the area where the drug is applied.

Cocaine Selectively Blocks Na+ (Sodium) Channels, Which Is the Mechanism