The skeleton, made up of bones and cartilage, serves critical functions—supporting the body, protecting organs, forming blood ...

YOU might not think much about the 206 bones that make up your skeleton. That is until yours start to ache, or you suffer from a break or fracture. “Your bones are one of the most important ...

While humans have 206 to 213 bones in our body, most sharks have about 200 to 400 structures made of cartilage. The exact number varies depending on the species. The only part of a shark's skeleton ...