Pneumatic bone is a special part of the bone structure in animals and humans. This bone is located in our body on the back of the femur. Bone is pneumatic - it contains many empty spaces (cavities, if translated literally) that are filled with air.
Why did nature give us such a structural element? It's a mystery! The role of the pneumatic bone is not fully understood, but scientists suggest that it is an element in the continuation of the human ancestral function or an adaptive evolutionary change that later arose through evolution.
It can be assumed that the pneumatic bone in the structure arose so that a person could maintain his vertical position. In ancient times, people used spears, spears and ax-like weapons when hunting. And some modifications of the pneumatic bone could further affect the strengthening of the skeleton.
Currently, pneumatic bones are of great interest to scientists, since not many people can boast of such. A large proportion of the population inhabiting the planet belongs to the owners of ordinary bones - without air cavities. In science, pneumatic bones have a special term and are the object of study. There are two types of pneumatic bones: long and short.