Dermal System 
Welcome to your world!
The human body is an 
intricate and complex 
web of interrelated systems.
Your body allows you to hold 
this book look at the pictures 
and understand what is written.
But how does it all work! Let's find out.
Let's uncover the human body.
Cellular connection 
From its protective layer of skin it to
tiniest nerves your body is made up of
tiny building blocks which is called cells.
Each cell is living thing-it eats 
breathes gets rid of waste and does 
a particular job. You are made up
of trillions of cells. Cells that
are the same get together to form
tissue such as bone and muscle tissue.
Tissues join together to make 
organ which are the main separate 
parts of the body. The main types
of your body are: Red cells carry 
oxygen around the body. They
are formed in the bone marrow.