What does the domino that does not fall represent in the context of neuron firing?

• A neuron that has reached its threshold potential

• A neuron that is at resting potential

• A neuron that has not reached its threshold potential

• A neuron that is firing an action potential

What is the role of the nodes of Ranvier in neural transmission?

• They allow for continuous conduction along the axon

• They are responsible for neurotransmitter release

• They facilitate saltatory conduction by allowing sodium influx

• They prevent the signal from moving forward

How does potassium contribute to the directionality of the action potential?

• By initiating the action potential

• By preventing the signal from moving backward

• By stopping the action potential

• By increasing the speed of the action potential

What is the primary function of the sodium-potassium pump in neurons?

• To release neurotransmitters

• To prevent the neuron from firing

• To maintain the resting potential by restoring ion gradients

• To initiate action potentials

What happens at the synapse when an action potential reaches it?

• The action potential stops

• A neurotransmitter is released

• The neuron depolarizes

• The neuron hyperpolarizes