The skeletal system is made out of bones which protect your organs. Bones are used for movement and structure and they produce blood cells in the bone marrow.
There are two hundred and six bones in an adult body. There are two categories of bones. The axial bones that help you stay upright and appendicular bones are for movement. The skull also known as the cranium protects the brain.
The ribcage has floating bones and fixed bones, they protect the heart the liver and lungs. The spine is made up of thirty three bones called vertebrae which protect the spinal cord.
The arms and the legs are similar structures, they have three bones. The arm has the humerous , radius and the ulna. The leg has the femur which is the longest bone in the body. The smallest bone in the body is called the an ossicle and three are there are three in the ear.
Joints connect the bones. There is a ball socket and a hinge joint. The pelvis is connected to the spine and is connected to the legs.
Regular exercise and calcium and vitamin D can help your bones stay strong.
By Aaron Mc Donagh.
There are two hundred and six bones in an adult body. There are two categories of bones. The axial bones that help you stay upright and appendicular bones are for movement. The skull also known as the cranium protects the brain.
The ribcage has floating bones and fixed bones, they protect the heart the liver and lungs. The spine is made up of thirty three bones called vertebrae which protect the spinal cord.
The arms and the legs are similar structures, they have three bones. The arm has the humerous , radius and the ulna. The leg has the femur which is the longest bone in the body. The smallest bone in the body is called the an ossicle and three are there are three in the ear.
Joints connect the bones. There is a ball socket and a hinge joint. The pelvis is connected to the spine and is connected to the legs.
Regular exercise and calcium and vitamin D can help your bones stay strong.
By Aaron Mc Donagh.
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