This document discusses medical terminology related to muscle coordination, speech, and language. It explains that the suffix -ataxia means muscle coordination and is controlled by the cerebellum in the brain. The suffix -phasia is related to speech and language abilities, which are localized to the left frontal lobe and Broca's area of the brain. Examples provided are ataxia, meaning lack of muscle coordination, and dysphasia, meaning difficulty or abnormality with speech.