Your brain and skull from the inside:

The human brain is a powerhouse with approximately 86 billion neurons and consumes 20% of the body's energy.

It processes information at speeds of up to 120 meters per second and remains active during sleep.

On the other hand, the adult human skull, which consists of 22 unique bones, has sutures that allow slight shape changes during birth.

Babies are born with fontanelles, soft spots that close as they grow. Each skull is unique, similar to fingerprints, and its evolution offers insights into human history.