CSD-2260 Lecture Notes - Lecture 3: Aryepiglottic Fold, Thyrohyoid Membrane, Lamina Propria

• School: App State
• Department: Communication Sciences and Disorders
• Course: CSD-2260
• Professor: Jennifer Dalton

Document Summary

Voiceless phonemes- speech sounds produced without the use of the vocal folds: s,f. Voiced phonemes- speech sounds produced by action of vocal folds: z,v. Phonation- voicing, the product of vibrating vocal folds, occurs within larynx: source of voice for speech. Vocal folds: five layers of tissue. Superficial lamina propria- elastin fibers which can be extensively stretched. Deep lamina propria- supportive layer comprised of collagen fibers. Intermediate lamina propria- elastin fibers for elasticity and strength. Intermediate and deep lamina propria combined form the vocal ligament (made of elastin) Thyroarytenoid muscle- 5th layer of vocal folds. Make up bulk of the vocal folds: space between folds is the glottis (rima glottides, subglottal region- area below the vocal folds, located within the course of the airstream at the superior end of the trachea. Framework of the larynx: the larynx is a musculocartilaginous structure at the superior end of the trachea. A complete ring resting atop the trachea.