Skeleton

The skeleton is is our innermost constructional element. Our rattling bones have historically been associated with death, but we couldn’t live without it!

The skeleton is made up of bone tissue, which is a strong building material. Its principal task is to act as a connection point and lever for the muscles. With more than 200 bones and over 60 joints, our rigid bones can be moved in different directions and protect vital organs.

As the fetus develops, a forerunner of the skeleton consisting of cartilage forms. The cartilage is subsequently replaced by bone. New-borns have more bones than adults since many bones fuse (join together) while growing up.

The bone tissue is continuously being broken down and replaced, around 10 percent of the bone tissue is replaced each year. In the elderly, particularly women, the bone mass decreases, which can lead to brittle bones.

The skeleton must be subject to regular loading, if it is to maintain its strength. This means weightless during space travel may cause problems for the astronauts.