When the Neurotransmitter Diffuses Across the Synaptic Cleft

question 76

Multiple Choice

When the neurotransmitter diffuses across the synaptic cleft,

• A) it automatically causes depolarization of the post­synaptic membrane.
• B) it can be excitatory or inhibitory, depending on the type of postsynaptic membrane.
• C) a single molecule is sufficient to trigger activation of the postsynaptic membrane.
• D) only a few molecules make it to the postsynaptic membrane.
• E) it must move through nodes in the myelin sheath.

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