The following is not true of local anaesthetics:
A. The local anaesthetic is required in the
unionized form for penetrating the neuronal
membrane
B. The local anaesthetic approaches its
receptor only from the intraneuronal face of
the Na+ channel
C. The local anaesthetic binds to its receptor
mainly when the Na+ channel is in the
resting state
D. The local anaesthetic combines with its
receptor in the ionized cationic form
A. The local anaesthetic is required in the
unionized form for penetrating the neuronal
membrane
B. The local anaesthetic approaches its
receptor only from the intraneuronal face of
the Na+ channel
C. The local anaesthetic binds to its receptor
mainly when the Na+ channel is in the
resting state
D. The local anaesthetic combines with its
receptor in the ionized cationic form