1. Although the outsides of a bone are hard, they are generally light and soft inside. They are about 75% water.
2. Bones can serve to protect internal organs, such as the skull protecting the brain or the ribs protecting the heart and lungs.
3. The smallest bone in the human body is the stapes bone which is located in the ear.
4. Bones provide a frame to keep the body supported.
5. The longest bone of the human body is the femur or thigh bone, which comprises roughly 1/4 of the persons overall height.
6. A total of 54 bones are found in both of your wrists, hands and fingers.
7. Because bones come in a variety of shapes and have a complex internal and external structure they are lightweight, yet strong and hard, in addition to fulfilling their many other functions.
8. A broken bone will take about 12 weeks to heal.
9. We are born with 300 bones, but only end up with 206 when we are adults.
10. Bones can continue to grow until you are 30 years.
11. The interaction between bone and muscle is studied in biomechanics.
12. Bones are important in the mechanical aspect of overshadowed hearing.
