Anatomy of Phonation Chapter 4 Perry C Hanavan
- Slides: 45
Anatomy of Phonation Chapter 4 Perry C. Hanavan
Stars
Functions of Larynx • Phonation • Sphincter – Swallowing • Aspiration (during swallow) – Holding breath
Phonation • Phonation or voicing – Vibrating the vocal folds in the larynx – Video Stroboscopy of the Vocal Cords • Subglottis
Phonation • Voiced • Unvoiced • Subglottal
Bernoulli • Bernoulli effect – Inverse relationship – Increase in air flow results in air pressure decrease – You. Tube
Summary of Phonation • • Phonation is the act of voicing Vocal fold vibrates Bernoulli effect Interaction between subglottal pressure, elasticity of vocal folds, and Bernoulli
Larynx • Musculocartilaginous structure located at upper end of trachea • Valve • Size varies with age and gender
Question Which of the following cartilages of the larynx consist of pairs (2)? A. Cricoid B. Thyroid C. Arytenoid D. Corniculate E. Epiglottis F. Hyoid
Question Which of the following is an osseous structure? A. Cricoid B. Thyroid C. Arytenoid D. Corniculate E. Epiglottis F. Hyoid
Tour of Larynx • Cartilaginous structures – – – Cricoid Thyroid Arytenoid Corniculate Epiglottis
Cricoid Cartilage
Aryteniod Cartilages
Crico-Arytenoid Articulation
Thyroid Cartilage
Thyroid/Cricoid Articulation
Tour of Larynx • Cartilaginous structures – – – Cricoid Thyroid Arytenoid Corniculate Epiglottis
Tour of Larynx • Cartilaginous structures – – – Cricoid Thyroid Arytenoid Corniculate Epiglottis
Valleculae
Valleculae
Osseous Structure • Hyoid
Question How many pairs of vocal folds do we have? A. One B. Two C. Three D. Four E. Five
Inside the Larynx • True vocal folds • False vocal folds • Laryngeal ventricle Zemlin: Tour of the Larynx
Questions Draw or bring together? A. Duct B. Abduct C. Adduct D. Induct E. Subduct
Vocal Folds Vocal folds in action
Vocal Folds
Question Muscles that connect to the same structure are referred to as ____ muscles. A. Trinsic B. Intrinsic C. Extrinsic D. Cotrinsic E. Subtrinsic
Intrinsic Laryngeal Muscles Adducts vocal folds; X cranial nerve
Question There is only one intrinsic tensor muscle of the larynx? True False
Intrinsic Laryngeal Muscles Aux Add Aux Tense
Intrinsic Laryngeal Muscle • Only abductor • X cranial nerve
Intrinsic Laryngeal Muscles
Question The text book suggests there are 2 muscles of the vocal fold? True False
Intrinsic Laryngeal Muscles • Thyrovocalis (vocalis) muscle tensor • Thyromuscularis muscle is relaxor • (debatable)
Intrinsic Laryngeal Muscles
Is it GERD or Is it?
External Laryngeal Muscles
External Laryngeal Muscles
Vocal Cord Paralysis
Intrinsic Muscles • • • Instant Anatomy UAMS Anatomy Intrinsic Muscles Disorders of Voice
Extrinsic Muscles • Larynx Anatomy Made Easy • Extrinsic & Intrinsic Muscles • Discover the Larynx
Joints • Discover the Larynx • Zemlin Slides
Nerves • Discover the Larynx
Common Disorders • • • University of Pittsburgh Vocal Surgery Pre-vocal surgery Cancer ENT Surgery
- Arytnoids
- Phonation and articulation
- Phonation and articulation
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