This document discusses the anatomy and organization of the nervous system. It covers the central nervous system (CNS), peripheral nervous system (PNS), and autonomic nervous system (ANS) including the sympathetic and parasympathetic divisions. Neuroanatomy is the study of the structure of the nervous system, while neurophysiology is the study of its function. Neuropsychology examines the effects of brain injury or disease on cognition, behavior, and emotion. Common neuropsychological evaluation techniques include lumbar puncture, angiography, magnetic resonance imaging (MRI), and computed tomography (CT) scans.