Question

Ij which direction does a synapse allow a nerve impulse to travel

Answer 1

Answer:

a nerve impulse can travel in only one direction. i.e., from brain top to bottom.

Explanation:

Nerve impulse travels in one direction because nerve cells (neurons) connect to each other by synapse. The synapse (neurotransmitter vesicle) acts as a valve and allows the only one-way flow of nerve impulse due to the presence of neurotransmitter which is found on the one side of the synapse and receptors being on the other side.