First Children Encyclopedia

(Marvins-Underground-K-12) #1

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


if


fe


re


n


t^


p


a


rt


s..


.^


A bundle of
nerves runs
down your
back, inside
your backbone.
Free download pdf