The human body is amazingly complicated. It's made up of hundreds of different organs, tubes, tendons, tissues and other body parts, each with its own job to do. In turn these parts are made up of millions of microscopic units called cells. Inside cells are the smallest body parts of all-the genes , which make us human. They tell cells how to do all the things they need to do to make our bodies work and keep us alive.  

Your amazing body

The human body is an amazing machine. Even though you rarely think about it your body is always busy. You have dozens of different organs masses of muscles and bones miles of blood vessels million of cells and a brain more powerful than any computer all working together to keep you alive. 

Four body parts are:

Organs

Body tissues

Body fluid 

water

Body science

Fascinating facts

Wherever you see a Body Science box like this you'llfind extra facts such as what archaeologist can tell from old bones how germs travel and what a phantom limb is.  

Going Wrong 

Body Breakdown

Although your body is amazing it can go wrong. Look out for those Going wrong boxes throughout the book. They explain all kinds of body breakdown and problem like what causes a heart attack why teenager gets zits and what makes you vomit.