What substance produces depression if there is very little of it?

Question: What substance produces depression if there is very little of it?

Options: 

Norepinephrine
Serotonin
Acetylcholine
Adrenalin

Correct answer:

Serotonin

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>