Is a major excitatory neurotransmitter that regulates the release of dopamine.

Norepinephrine is a major excitatory neurotransmitter that regulates the release of dopamine, it is a substance used mainly by the sympathetic or orthosympathetic nervous system, it is part of the neurotransmitters, its function is to transmit messages through the nerves to the different components of the body through numerous physiological processes.

ANSWER:

Norepinephrine

EXPLANATION:

Norepinephrine is an organic chemical which is also known as noradrenaline or stress hormone. It belongs to the catecholamine family that functions in the brain and body as both hormone and neurotransmitter. It is a chemical which is mostly released by the sympathetic nervous system at times of stress.

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