During synaptic transmission across a typical synapse, which of the following occurs?
A) sodium ions flow into the membrane of the presynaptic neuron
B) the binding of neurotransmitters triggers the release of potassium ions by the presynaptic neuron
C) vesicles containing neurotransmitter molecules diffuse to the receiving neuron's plasma membrane
D) neurotransmitter molecules bind to receptors on the postsynaptic membrane

Question

Quizplus · Accepted Answer

During synaptic transmission, neurotransmitter molecules are released from the presynaptic neuron and bind to receptors on the postsynaptic membrane, causing ion channels to open or close, which affects the postsynaptic neuron's excitability. Sodium ions may flow into the postsynaptic membrane, but not the presynaptic membrane. There is no known mechanism of neurotransmitter-triggered release of potassium ions. Vesicles containing neurotransmitter molecules are released from the presynaptic neuron, but they do not diffuse to the receiving neuron's plasma membrane.

During Synaptic Transmission Across a Typical Synapse, Which of the Following