The document discusses medical suffixes related to the nervous system. It describes the suffixes "-plegia" and "-phasia". -Plegia refers to paralysis and is used in terms like paraplegia and hemiplegia to describe paralysis in different parts of the body. It can result from damage to the spinal cord or brain. -Phasia refers to speech and is used in terms like aphasia to describe speech disorders that can result from injuries or diseases affecting the brain centers involved in speech. Several examples of medical terms using each suffix are provided.