Human Skeleton in 3D: All 206 Bones
The skeleton is the frame of the body. An adult has 206 bones that hold you up, protect your organs and give your muscles something to pull on. In the 3D Anatomy simulator you can show the skeleton on its own and take a guided tour, one bone at a time.
Explore in 3DSkeleton quick facts
| Adult bones | 206 |
|---|---|
| Newborn bones | About 270 to 300, many fuse as we grow |
| Longest bone | The thigh bone (femur) |
| Smallest bone | The stirrup in the ear |
| Makes | Blood cells, in the bone marrow |
Interesting facts about the skeleton
- Babies are born with more bones than adults, because some fuse together as they grow.
- The skull protects the brain, and the ribcage protects the heart and lungs.
- The spine is made of 33 vertebrae at birth, some of which fuse later.
- Bones are living tissue that can repair themselves after a break.
- Bone marrow inside many bones makes red and white blood cells.
What you can do in 3D
Switch to the Skeleton layer to see the bones on their own, then start the Skeleton tour in Learning Modules to go bone by bone with a short note on each.
More body systems in 3D
Tap any part to open its page.
Skeleton questions
How many bones are in the human body?
An adult has 206 bones. Babies have around 270 to 300, and some fuse together as they grow.
What is the longest bone in the body?
The femur, or thigh bone.
What does the skeleton do?
It supports the body, protects organs like the brain, heart and lungs, lets us move, and makes blood cells in the bone marrow.
How many bones are in the spine?
The spine has 33 vertebrae at birth. Some fuse together, so adults usually count 26 separate bones.
Can bones heal?
Yes. Bones are living tissue and can knit back together after a break.
The 3D Anatomy simulator is made by Julian Neagu, a solo founder in London, as part of VisionVix Simulators. It is free to use in the browser on desktop and phone, with no sign-up. This page is for learning and is not medical advice.