( series of mechanical body, part 2 )
Without your bones, your body can’t do anything. You can’t stand up on your both legs look like an empty plastic bag , just lie down on the floor. Like a building, your body shaped frame on the skeleton or bones. There are more then 206 kinds of bones construct you strongly. This one protect your important instrument like brain, heart, lungs, etc.
Bones are make from calcium and a few phosphoric mineral. It’s form one surprisingly strong. Like a cement, you may imagine how strong the bones are. Cement contains a lot of calcium too. Inside the bones, calcium absorbed by bones cell called ‘Osteoblast’ . How this cell can do their job make the bones stronger ?
When you eat anything that contains calcium -- broccoli, yogurt, whatever -- the calcium is absorbed from your small intestine into your blood. Osteoblasts pull the calcium out of the blood and deposit it as new bone.
Osteoclasts and osteoblasts, both are working in opposite function. Osteoclast clean up the old bones and ostoblast lie on there to form the bones, so it’s reasons why your bones are constantly rebuilding themselves to stay strong. They will eventually bridge the broken bone and then start filling it in with new calcium. Meanwhile, osteoclasts will break down all the bone fragments nearby to clean up the area.
( more about The muscles see its later in next article… )
ref : www.howstuffworks.com
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