View the animation of a nerve conducting an impulse and answer the following questions.

1) Where is the neurotransmitter kept in the axon terminals in the body of the neuron in the nucleus in the myelin sheath

2) When an impulse arrives at the end of a neuron what must happen before vesicles containing neurotransmitter migrate to the membrane? sodium gates open in the post synaptic neuron calcium gates open in the post synaptic neuron calcium gates open in the pre-synaptic neuron

3) Once released into the synapse the neurotransmitter enters the post synaptic neuron is destroyed lock onto receptors at the surface of the post synaptic neuron

4) Once on the post synaptic neuron the neurotransmitter causes the sodium gates open in the post synaptic neuron calcium gates open in the post synaptic neuron calcium gates open in the pre-synaptic neuron

5) Which of the following will move into the post synaptic neuron as a result of the neurotransmitter? sodium ions calcium ions sodium and calcium ions