The document provides an overview of brain anatomy and terminology. It begins with defining anatomical language used to describe positions and structures in the brain. It then discusses the three main layers covering the brain and the differences between grey and white matter. It outlines the major structures of the brain including the cerebrum, cerebellum, brainstem, and describes the forebrain, midbrain, and hindbrain. It provides details on the circle of Willis and its role in blood supply to the brain.