1. Anatomy of Phonation Chapter 4
Perry C. Hanavan

2. Stars

3. Functions of Larynx Phonation Sphincter Swallowing Holding breath
Aspiration (during swallow)
Holding breath

4. Phonation Phonation or voicing Subglottis
Vibrating the vocal folds in the larynx
Video Stroboscopy of the Vocal Cords
Subglottis

5. Phonation
Voiced
Unvoiced
Subglottal

6. Bernoulli Bernoulli effect Inverse relationship
Increase in air flow results in air pressure decrease
YouTube

7. Summary of Phonation Phonation is the act of voicing
Vocal fold vibrates
Bernoulli effect
Interaction between subglottal pressure, elasticity of vocal folds, and Bernoulli

8. Larynx Musculo-cartilaginous structure located at upper end of trachea
Valve
Size varies with age and gender

9. Question
Which of the following cartilages of the larynx consist of pairs (2)?
Cricoid
Thyroid
Arytenoid
Corniculate
Epiglottis
Hyoid

10. Question Which of the following is an osseous structure? Cricoid
Thyroid
Arytenoid
Corniculate
Epiglottis
Hyoid

11. Tour of Larynx Cartilaginous structures Cricoid Thyroid Arytenoid
Corniculate
Epiglottis

12. Cricoid Cartilage

13. Aryteniod Cartilages

14. Crico-Arytenoid Articulation

15. Thyroid Cartilage

16. Thyroid/Cricoid Articulation

17. Tour of Larynx Cartilaginous structures Cricoid Thyroid Arytenoid
Corniculate
Epiglottis

18. Tour of Larynx Cartilaginous structures Cricoid Thyroid Arytenoid
Corniculate
Epiglottis

19. Valleculae

20. Valleculae

21. Osseous Structure
Hyoid

22. Question How many pairs of vocal folds do we have? One Two Three Four
Five

23. Inside the Larynx True vocal folds False vocal folds
Laryngeal ventricle
Zemlin: Tour of the Larynx

24. Questions
Draw or bring together?
Duct
Abduct
Adduct
Induct
Subduct

25. Vocal Folds
Vocal folds in action

26. Vocal Folds

27. Question
Muscles that connect to the same structure are referred to as ________ muscles.
Trinsic
Intrinsic
Extrinsic
Cotrinsic
Subtrinsic

29. Intrinsic Laryngeal Muscles
Adducts vocal folds; X cranial nerve

30. Question
There is only one intrinsic tensor muscle of the larynx? True False

31. Intrinsic Laryngeal Muscles
Aux
Add
Add
Aux
Tense
Tense

32. Intrinsic Laryngeal Muscle
Only abductor
X cranial nerve

33. Intrinsic Laryngeal Muscles

34. Question
The text book suggests there are 2 muscles of the vocal fold? True False

35. Intrinsic Laryngeal Muscles
Thyrovocalis (vocalis) muscle tensor
Thyromuscularis muscle is relaxor
(debatable)

36. Intrinsic Laryngeal Muscles

37. Is it GERD or Is it?

38. External Laryngeal Muscles

39. External Laryngeal Muscles

40. Vocal Cord Paralysis

41. Intrinsic Muscles Instant Anatomy UAMS Anatomy Intrinsic Muscles
Disorders of Voice

42. Extrinsic Muscles Larynx Anatomy Made Easy
Extrinsic & Intrinsic Muscles
Discover the Larynx

43. Joints
Discover the Larynx
Zemlin Slides

44. Nerves
Discover the Larynx

45. Common Disorders University of Pittsburgh Vocal Surgery
Pre-vocal surgery
Cancer
ENT Surgery