What will happen when two action potentials triggered simultaneously at each end of an axon meet in the middle of the axon?

When they meet both action potentials will stop. That is because the propagation depends on the fact that the axon in front of the potential is not in its refractory period while the region behind is. When the two potentials meet then the cell is refractory in both directions.

What stops an action potential in a connected neuron?

Neurotransmitter – A chemical released from a neuron following an action potential. The neurotransmitter travels across the synapse to excite or inhibit the target neuron.

What happens if you stimulate an axon in the middle?

If you place an electrode in the middle of an axon and stimulate it, an action potential will propagate in both directions.

What stops an action potential?

The refractory period prevents the action potential from travelling backwards. There are two types of refractory periods, the absolute refractory period and the relative refractory period. The absolute refractory period is when the membrane cannot generate another action potential, no matter how large the stimulus is.

What would happen if 2 action potentials meet?

Answer: Colliding action potentials cancel each other out because the refractory period of either spike prevents the continuation of an impulse in either direction.

What do you think would happen if you stimulated an axon in its middle rather than at the axon hillock?

If you stimulate an axon in the middle, action potentials are conducted in both directions. Yet when an action potential is generated at the axon hillock, it goes only toward the axon terminals and does not backtrack.

How does stimulation of a neuron causes a local electrical response in its membrane?

When an electrical pulse stimulates and destabilizes the membrane, the tiny ion channels open wide and allow positive sodium ions to enter the cell. This, in turn, makes the cell positively charged.

What would happen if the action potential would not stop?

This means that some event (a stimulus) causes the resting potential to move toward 0 mV. When the depolarization reaches about -55 mV a neuron will fire an action potential. This is the threshold. If the neuron does not reach this critical threshold level, then no action potential will fire.

Why do action potentials not occur when these channels are inhibited?

An action potential would not occur because an action potential in an axon cannot be initiated without voltage-dependent Na+ channels.