Uncover human body 4

Red blood cells carry oygen 

around the body. 

They are formed in the 

bone marrow.

Nerve cells called neurons 

tranmits electrical message 

Neurons directs every 

move thought and senation.

Muscle cells also movement

possible. They are only cells 

that can contract or become thicker and shorter

bone layer very strong. In addition,

the hard outer layer of your bone is

made up of bone cells packed tighty 

together into rings like tree trunk

this makes the bone layer very strong.

White blood cells are mostly formed 

in the bone marrow. They attack the germs

that make you sick.

The skin you see on your

body is about twenty 

to thirty skin cell layers

deep and is mostly dead

but below the dead cell

there going a lot going on.