Question

question 9 1 pts action potential causes vesicles to discharge their content into the synaptic cleft. what is that content? electrons all of these a neurotransmitter substance ions

Explanation:

When an action potential reaches the axon terminal, it causes synaptic vesicles to release neurotransmitter substances into the synaptic cleft. Neurotransmitters are chemical messengers that transmit signals across the synapse to the next neuron or target cell. Electrons and ions are not the content released from vesicles into the synaptic cleft in this context.

Answer:

C. a neurotransmitter substance