The cranial nerves are a set of twelve pairs of nerves that travel to and from the brain. Each has a different function. For example, the olfactory nerve is essential for detecting smells.

It plays a role in just about every major body system. Some of the brain’s main functions include: The cerebrum is the largest part of the brain. It’s divided into two halves, called hemispheres.

and brain stem. Each of these has a unique function and is made up of several parts as well. Keep reading to learn more about the different parts of the brain, the processes they control ...