Skeletal+system+11

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 * Main components**

There are three main types of bones flat bones they protect for example your skull protects your brain, another type of bone is a long bone is your femur, tibia, fibular, humorous and radius and the last bone is called a small bone, small bones are little bones like carpel bones and another small bone is called a tympanic.


 * Diseases**

There are a number of diseases for bones including ; broken bones, osteoporosis , arthritis and more. Broken bones; a way to know if you have a broken bone is if swelled up or swollen or if you have a large lump or if you cant move it. If any of these is happening to you you should tell a doctor.

Osteoporosis; happens when bones lose there calcium. They then become weak and easily fractured. Not much exercise and the loss of calcium can lead to osteoporosis at any age. The very bad sufferers of osteoporosis can become shorter and even develop a hunchback.

Arthritis; starts to occur when your joints in your body start to get sore and swollen. The most common form of arthritis is osteoarthritis. This one starts to happen when the cartilage starts to get old and breaks down. Cartilage mostly wares away when you start to get older about 60 years of age


 * Overview**

Facts; in your body there are more then 206 bones. A good exercise for keeping fit and having good strong bones is to jump up and down with your feet together. A baby’s skull is very soft and separate. They also have a gap at the top called a fontanel. The skull bones then join together when the baby stops growing leaving lines on the outside called sutures. In total there are 22 bones in the skull. There is the same number in a human’s neck as a giraffe except giraffes have longer vertebrates. As you and your bones start to get older and grow the cartilage cells in the ends divide to make more cells. The matrix then becomes hard to make a bone. A babies head Is about a quarter of its size but an adults head is only about one eighth of its height. An x-ray is the oldest form of medical imaging