Although there are over 40 neurotransmitters, those that are the most familiar and important for psychiatric disorders are all of the following except renin.
In the field of biology, neurotransmitters can be described as chemical messengers that travel through the body as part of the nervous system. Acetylcholine, dopamine, and norepinephrine are all neurotransmitters that are important for psychiatric disorders whereas renin is a hormone that is important for the maintenance of blood pressure. Hence the correct option is renin.
Renin is known for controlling blood pressure by acting on angiotensinogen. Renin helps in the vasoconstriction of the arteries which helps in the maintenance of appropriate blood pressure in the arteries. Renin is produced by the kidneys.
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