We learned that this is both an excitatory and inhibitory neurotransmitter last week.

Aims to prevent or slow down neuronal firing.

Aims to increase or speed up neuronal communication.

This neurotransmitter, when overactive, may be associated with Schizophrenia.

This neurotransmitter is associated with the following:

involved in attention, learning, and reinforcing effects of several often-abused drugs, sex, and attention-grabbing experiences

Some research shows that this neurotransmitter may play a role in mood.

This neurotransmitter plays a role in the following:

governs sympathetic arousal by activating heart and blood vessels (gives rise to the "fight or flight" response)

also released in the brain to enhance attention and memory for emotionally-charged events

This neurotransmitter has the following characteristics:

is the most abundant inhibitory neurotransmitter in the brain

associated with calming effects

These neurotransmitters both play a role in learning.

Endorphins have the following characteristics: (Choose all that apply).

The nervous system is composed of billions of neurons:

These neurotransmitters are both involved in muscle movement to some degree: