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Anatomy
Which of the following statements is not true of local anaesthetics?
The local anaesthetic is required in the unionized form for penetrating the neuronal membrane
The local anaesthetic approaches its receptor only from the intraneuronal face of the Na+ channel
The local anaesthetic binds to its receptor mainly when the Na+ channel is in the resting state
The local anaesthetic combines with its receptor in the ionized cationic form
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