Brain Anatomy in 3D: Lobes, Regions and What They Do
The brain is the control centre of the body. It handles thinking, memory, feelings, movement and every sense, all from inside the skull. In the 3D Anatomy simulator you can see the brain inside the head, with the skull on one half so you can see exactly where it sits.
Explore in 3DBrain quick facts
| Where it is | Inside the skull |
|---|---|
| Weight | About 1.3 to 1.4 kg in an adult |
| Nerve cells | About 86 billion neurons |
| Main parts | Cerebrum, cerebellum and brainstem |
| Lobes | Frontal, parietal, temporal and occipital |
| Energy use | About 20% of the body's energy |
Interesting facts about the brain
- The cerebrum is split into a left and right half, joined by a thick band of nerve fibres.
- The frontal lobe helps with planning, decisions and movement.
- The occipital lobe at the back of the head handles sight.
- The cerebellum, tucked under the back of the brain, keeps your balance and smooths your movements.
- The brainstem runs automatic jobs like breathing and heartbeat.
What you can do in 3D
Open the brain to see it inside the head with the skull cut away on one side, then turn the view to see how it fits behind the eyes and above the spine.
More organs in 3D
Tap any part to open its page.
Brain questions
What are the main parts of the brain?
The cerebrum (the large wrinkled part), the cerebellum at the back, and the brainstem, which connects the brain to the spinal cord.
What are the four lobes of the brain?
The frontal, parietal, temporal and occipital lobes. Each half of the cerebrum has all four.
How much does the brain weigh?
An adult brain weighs about 1.3 to 1.4 kg, around 2% of body weight.
How many neurons are in the brain?
About 86 billion nerve cells, linked by trillions of connections.
Which part of the brain controls balance?
The cerebellum, at the back of the brain under the cerebrum, controls balance and coordination.
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.