Arrange the events that occur during synaptic transmission. Use letters A-F to denote the correct sequence. Use the diagram below as a clue.

Example: 

              B 1. Ion channel opens

10.

 

1. Ion channel opens.       A   B   E   F   D   C   2. Neurotransmitter is released into synaptic cleft.   A   B   E   F   D   C   3. Vesicle fuses with plasma membrane.   A   B   E   F   D   C   4. Neurotransmitter binds to receptor.   A   B   E   F   D   C   5. Action potential arrives.   A   B   E   F   D   C   6. Ion channel closes.

Study the events that happen at the synapse (arrival of action potential, fusion of synaptic vesicles, release of neurotransmitter, binding of neurotransmitter to ion channels). Be prepared to describe these events in short answer questions, study the figure of the synapse.

v-SNARES and t-SNARES are important for ____.

responding to calcium ions.

docking of synaptic vesicles to the plasma membrane.

reuptake of neurotransmitters.

ligand-gated channel opening.

receiving neurotransmitter signals.

In order to trigger the releaseof neurotransmitter from a neuron terminal, calciumions:

a. exit the synaptic knob through diffusion

b. bind to proteins on the surface of synaptic vesicles

c. penetrate the synaptic vesicles and bind to molecules ofneurotransmitter

d. bind to ion channels on the neuron membrane and cause them toopen for the transmitter