Question

chemical messages that make it more likely that a receiving neuron will fire and an action potential will travel down its axon are called ______ messages. options: terminal, excitatory, inhibitory, reuptake

Explanation:

• "Terminal" refers to axon terminals, not the message type.
• "Excitatory" messages increase the likelihood of a neuron firing (action potential).
• "Inhibitory" messages decrease this likelihood.
• "Reuptake" is a process of neurotransmitter reabsorption, not a message type.

Answer:

B. excitatory