Examine anatomy and physiology of structures involved in speech, language, hearing, and swallowing in a laboratory setting. Explore anatomical and physiological mechanisms of respiration, phonation, articulation, and hearing; and the central nervous system and blood supply to the speech and hearing mechanism. One and one-half laboratory hours a week for one semester. Communication Sciences and Disorders 158L and Speech, Language and Hearing Sciences 158L may not both be counted. Prerequisite: Upper-division standing.