A local anesthetic such as Novocaine decreases membrane permeability to Na⁺. The use of this anesthetic will

A) block sensory input into the CNS.
B) enhance the development of EPSPs.
C) cause membrane potential to move closer to threshold.
D) cause Cl⁻ to enter cells instead of Na⁺.
E) depolarize the cell.

Question

Rheft Alqalb · Accepted Answer

Final Answer : A, Explanation :  Local anesthetics like Novocaine work by blocking sodium channels, which prevents the initiation and propagation of action potentials. This effectively blocks sensory input into the CNS by preventing the transmission of pain signals.

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