Maybe
a: Dopamine ~
b: a sparkplug
What: "As a neurotransmitter, dopamine is like a sparkplug in your car's engine - filtering out messages through your nervous system that enable you to control your movements."
Useful?
Writer: Paul Fraumeni
LCC:
Where:
Date: Oct 29 2013 10:57 AM
# 4336 Critique Analogy