Question: What chemical reactions are created to express feelings?

Sophie Holles answered on 19 Mar 2013:

Soooo many they couldn’t be listed here. I don’t know them all and there are probably lots that nobody know about yet either!! That’s one of the reasons we study science to find these things out. Hormones are chemicals involved in the expressions of feelings, and nervous impulses go round your brain when you’re thinking and feeling and then from your brain to your eyes, mouth, limbs and all the places you express yourself physically. Nervous impulses are transmitted by movement of salt ions and from one neurone to the next by chemical signals called neurotransmitters like acetylcholine.