The brain is made up of all these parts! It’s not really useful to know their anatomy for a general citizen who is just trying to use their brain well. Who cares that your happiness is physically a little lima bean located towards the front and bottom of the brain? Still, it’s kind of cool that our brain has specific parts that do specific things. The function of some body parts (bones, the heart) is obvious, but neurons don’t give their secrets away just by how they look.