A Peek Inside Everyone is unique. Hundreds of bones, miles of blood vessels, and trillions of cells, all of which are constantly working together, doing all kinds of different things.
Anatomists are people who study the human body.
As an adult you'll have 206, because some fuse together. Flat bones are flat and smooth, like your rib and shoulder blades. Irregular bones, like the three bones in your inner ear and the vertebrae in your spine, come in many different shapes. Bones don't bend. It is the joint that allows two bones next to each other to move.