The document describes the structure and function of the brain and nervous system. It outlines the major parts of the brain including the cerebrum, diencephalon, brain stem, and cerebellum. It also lists the 12 pairs of cranial nerves and their functions. Additionally, it discusses the peripheral nervous system including spinal nerves and how the sympathetic and parasympathetic nervous systems maintain homeostasis. Finally, it provides an overview of a neurologic examination including purposes, equipment used, and components assessed such as mental status, cranial nerves, coordination, and sensory system.