The brain is made up of billions of neurons and specialized parts that play important roles in different functions. Learn about the parts of the brain and what they do. Learn about the parts of the brain and their functions. Get a diagram of human brain anatomy and key facts about this important organ. Learn about the main parts of the brain , their functions and how they communicate with each other. The brain is composed of gray and white matter, cerebrum, brainstem, cerebellum, meninges and lobes. The brain is the human body's control system, and is part of the central nervous system (CNS). Learn more.
