Examlex
Which of the following is a large group of molecules involved in signaling and regulation of defense responses?
Mood
A temporary state of feeling or emotion that impacts a person's perception of the world around them.
Excitatory Neurotransmitter
Chemical substances that transmit nerve signals across a synapse from one neuron to another, typically promoting an action potential.
Glutamate
A major neurotransmitter in the brain involved in learning, memory, and the regulation of the nervous system's excitatory signals.
Brain
The organ located in the head of an organism that controls most of the activities of the body, processes sensory information, and is the center of thought and emotion.
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