CMD 276 Lecture 6: CMD 276 - Lecture 6 - Articulatory System and Articulation

• School: URI
• Department: Communicative Disorders
• Course: CMD 276
• Professor: Milner Bethany

Document Summary

Cmd 276 - lecture 6 - articulatory system. The vocal tract is a tube modified by movement of the articulators. Oral and nasal cavities are positioned horizontally, pharynx is vertical. System of movable and immovable structures that form a series of valves. Opening is the point of exit for most speech sounds. Shape is altered during speech to enable the production of individual sounds and change the resonance of the vocal tract. Made of muscle, mucous membrane, glandular tissues, and fat covered in epithelium. Inner surface of upper lip connects to midline of alveolar region by the superior labial frenulum. Lower lip connected to midline of mandible by inferior labial frenulum. Primary orbicularis oris; surrounds upper and lower lips. Elevators levator labii superioris, levator anguli oris, zygomatic major and minor, risorius. Depressors depressor anguli oris, depressor labii inferioris, mentalis. Change position of lips to change shape of the oral cavity. Keeps food and liquid inside the mouth.