Procaine (Novocain)is a Drug That Blocks Voltage-Gated Na⁺ Channels

Multiple Choice

Procaine (Novocain) is a drug that blocks voltage-gated Na⁺ channels.  When present,what would happen in a neuron?

A) Graded potentials are possible,but the neuron will not have the depolarizing phase of the action potential.
B) Neither graded potentials nor action potentials will occur.
C) Graded potentials are possible and the neuron will have the depolarizing phase of the action potential,but will be unable to repolarize.
D) No phase of the action potential will be affected.