How do you remember the way to your friend's house? Why do your
eyes blink without you ever thinking about it? Where do dreams
come from? Your brain is in charge of these things and a lot
more. In fact, your brain is the boss of your body. It runs the
show and controls just about everything you do, even when you're
asleep. Not bad for something that looks like a big, wrinkly,
gray sponge. Your brain has many different parts that work
together. We're going to talk about these five parts, which are
key players on the brain team: cerebrum (say: suh-REE-brum)
cerebellum (say: sair-uh-BELL-um) pituitary (say: puh-TOO-uh-
ter-ee) gland hypothalamus (say: hy-po-THAL-uh-mus) The Biggest
Part: the Cerebrum The biggest part of the brain is the
cerebrum. The cerebrum makes up 85% of the brain's weight, and
it's easy to see why. The cerebrum is the thinking part of the
brain and it controls your voluntary muscles — the ones that
move when you want them to. So you can't dance — or kick a
soccer ball — without your cerebrum