Amazing Facts

The Skeletal System

The Skeleton is the name given to the collection
of bones that holds the rest of our body up. Our skeleton is
very important to us. It does three major jobs.
** It protects our vital organs such as the brain, the heart, and the lungs.
It gives us the shape that we
have. Without our skeleton,we would just be a blob of blood and tissue on
the floor. Yuck!
** It allows us to move. Because our muscles are attached to
our bones, when our muscles move, they move the bones, and we move.
When you were born, your skeleton had
around 350 bones. By the time you become an adult, you will only have
around 206 bones. This is because, as you grow, some of the bones join
together to form one bone.
Our bones don't simply work on their
own. The bones join together to form joints. The end of each bone is
covered by a tough, smooth shiny substance called cartilage. The
cartilage-coated bone-ends are kept apart by a thin film of slippery fluid that
works like oil in a car. All of this is so your bones won't scratch and
bump against each other when you move. Our bones are held together by strong
stretchy bands called ligaments.

Related Tags: Bones  Human  Body  
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