Question

a chemical message that prevents or decreases the likelihood that a receiving neuron will fire is called a(n) ______ message.
options:
synaptic
reuptake
inhibitory
excitatory

Explanation:

• "Synaptic" relates to synapses but doesn't describe the message type.
• "Reuptake" is about neurotransmitter reabsorption, not message inhibition.
• "Inhibitory" messages decrease neuron firing likelihood, matching the description.
• "Excitatory" increases firing likelihood, opposite of the question.

Answer:

C. inhibitory