SKELETAL SYSTEM

The skeletal system, all the bones together make up your skeleton,which is the framework of your body.It also has five major functions.

The first function gives shape to your body like the framework.Second,bones protect your internal organs likes the lungs,heart,and the brain.

Third major function is the muscles that are attached to the bones,Muscles Move The bones around.Without the muscles your bones wouldn't move they would just stay there.

Forth, the blood cells are made inside the bone marrow.So that's how blood cells are made.Finally,the skeleton is where major amounts of calcium and phosphorus are stored.

Teamwork-The skeletal also works with muscles.Skeletal muscles are the muscles that move the bone around.They are attached to bones by thick bands of tissue called tendons.

The skeletal system also works with the circulatory system.Marrow inside your bones helps reduce the cells inside your blood.lBoth need red blood cells and white blood cells.

Your bones also work with the nervous system.The skeletal system so rounds the organs and safeguards the delicate nerve tissue from the trauma.It also protects the kings and heart with the ribs.

Pivot Joint-One bone rotates in a ring of another bone.Turning your head and turning your wrist are both examples of of a pivot joint.

Ball and socket-Both of your shoulders are ball and socket joints.This allows you to move your arm without causing damage.It also allows your shoulders and hips for a wider rotation.

An adult human has a total of 206 in six bones.Bone is made up of layers of living tissue.In the compact nine,there are circular structures called Haversian systems.When the bone is cut you are able to see them inside of the bone.

Each of your bones are mad of several living tissue.Before you were born your now bones started as just cartilage.As you got older your cartilage died and was replaced with bone.

SOURCES

• Textbook
• Biology forbids.org
• Kid info.com
• Live strong.com