LING 2P90 Lecture Notes - Lecture 7: Posterior Cricoarytenoid Muscle, Pivot Joint, Lamina Propria

• School: Brock University
• Department: Linguistics
• Course: LING 2P90
• Professor: Richard Welland

Document Summary

Glossopharyngeal (cn ix), vagus (cn x), accessory (cn xi), Use higher % of vc for speech breathing. Speak more slowly (may compensate for other changes) Speech mechanism *face diagram the same as phonetics. Biological function: protects the lower respiratory tract; ex. cough reflex. Nonbiological function: sound generator crying, laughing, screaming, speaking, singing. Cricoid cartilage sits on top of the trachea. 3 unpaired cartilages : cricoid cartilage, thyroid cartilage, epiglottis. 3 paired cartilages: arytenoid cartilages (sit on top of crcoid cartilage posterior view), corniculate cartilages (sit on top of very peak of arytenoid cartilages), 2 cuneiform cartilages. Location: superior to uppermost tracheal ring; attached to trachea via cricotracheal membrane/ligament. Shape/features: signet ring shape; cricoid lamina (upper esophagus attachment, posterior cricoarytenoid muscle origin, facets for arytenoid cartilages), arch of the cricoid cartilage (facets for inferior cornu of thyroid cartilage) Location: superior to cricoid cartilage; attached via ligaments to cricoid cartilage.