Inside the brain poster

Inside the brain poster

Go inside the brain with our classroom poster, free to download

Image of Inside the Brain poster

Our brains contain some 86 billion neurons, or nerve cells, which communicate via junctions called synapses. At these junctions, neurons are just 20 nm apart. Inside each of our heads you’ll find one brain, billions of neurons and trillions of synapses.

We’ve shown one of each in detail in our free ‘Inside the Brain’ poster. Download the poster or its images below.

Lead image:

'Big Picture: Inside the Brain' 2013 CC BY

Downloadable resources

About this resource

This resource was first published in ‘Inside the Brain’ in January 2013 and reviewed and updated in November 2017.

Inside the Brain
Education levels:
16–19, Continuing professional development