Which of the following statements regarding inhibitory messages is TRUE?
A. The dendrites of a neuron cannot receive both excitatory and inhibitory messages simultaneously.
B. Inhibitory messages decrease the likelihood that a receiving neuron will fire.
C. Inhibitory messages always increase the likelihood that a receiving neuron will fire.
D. Inhibitory messages make it more likely that an action potential will travel down its axon.
Answer: B
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