serotonin - happiness, satisfactiondopamine - love, passion, pleasureacetylcholine - learning, memory, dreaming

serotonin - happiness, satisfaction
dopamine - love, passion, pleasure
acetylcholine - learning, memory, dreaming

Reblogged 11 months ago from cajunmama (Originally from sdfgrefeafsad)
54,704 notes
Tagged: jewelry, biology, chemistry, .
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    I have this tattooed. :)
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