Do clever people have bigger brains?
Human body
108
Your brain is the part of your body
that makes you think, feel, and
remember. It makes sure that the
rest of you works properly.
Your brain
Your brain is hidden
inside your head. It
looks a little bit like a
soft, wrinkly lump
of greyish-pink
blancmange,
or jelly.
Brain and senses
Nerves
Your brain is linked to your
body by fibres called nerves.
Nerves carry messages from
your body to your brain,
and back again.
Your brain weighs
about the same
as 12 apples.
If you prick your
finger, your brain
makes you feel pain.
You use
your brain
to think.
Reflex actions
If you accidentally
prick your finger on a
rose thorn, your brain
quickly makes you
pull your hand away.
This fast reaction is
called a reflex action.
Your hard, bony skull protects
your brain from damage.
D
i
f
f
e
r
e
n
t
p
a
r
t
s
.
.
.
A bundle of
nerves runs
down your
back, inside
your backbone.
