Your Body Has Designed a Traffic Signal for Action Potentials

Multiple Choice

Your body has designed a traffic signal for action potentials traveling from one neuron to another.In this system, the red light represents _____.

A) an excitatory neurotransmitter
B) an inhibitory neurotransmitter
C) a combination of excitatory and inhibitory neurotransmitters
D) as an action potential can never stop, a "red light" could not occur