Human Bones, Joints and
Muscles Facts
1. Your bones are composed of 31% water.
2. Your bones, pound for pound, are 4 times stronger than concrete.
3. A muscle called the diaphragm controls the human breathing
process.
4. Bone is stronger than some steel.
5. Bones make up only 14% of our weight.
6. At birth we have over 300 bones. As we grow up, some of the bones
begin to fuse together as a result an adult has only 206 bones.
7. The muscles of our body constitute 40% of our body weight.
8. The muscles of the eye move more than 100,000 times a day.
9. The muscles that control your eyes contract about 100,000 times a
day (that’s the equivalent of giving your legs a workout by walking 50 miles).
10. If you remove the minerals from a bone by soaking it overnight in
a six percent solution of hydrochloric acid, it will become so soft, you could
tie it in a knot.