The document summarizes the anatomy of the larynx. It describes the cartilages that make up the skeleton of the larynx including the thyroid, cricoid, epiglottis, arytenoid, corniculate and cuneiform cartilages. It details the ligaments and membranes, as well as the muscles of the larynx including the cricothyroid muscle. Finally, it briefly discusses the nerve and blood supply to the larynx and mentions the procedure of tracheostomy.

1. Larynx
(Page 142)
Dr.Sherif Fahmy

2. Skeleton of larynx
A- Cartilages:
1- Single: Thyroid, cricoid and
epiglottis.
2- Paired: Arytenoid, corniculate
and cuneiform.
B- Membranes: Thyrohyoid,
cricothyroid, cricotracheal and
quadrangular. Dr.Sherif Fahmy

3. Thyroid cartilage
Dr.Sherif Fahmy

4. Thyroid cartilage
Cricoid cartilage
Quadrilateral
lamina
Laryngeal prominence
(Adam’s apple)
Hyoid bone
Dr.Sherif Fahmy

5. Laryngeal
prominence
Thyroid notch
Superior horn
Inferior horn
Oblique line
Thyoid cartilage Quadrilateral plate
of cartilage
Dr.Sherif Fahmy

6. Cricoid Cartilage
Dr.Sherif Fahmy

7. Cricoid cartilage
Anterior arch
Posterior quadrate lamina
Articulation with
inferior horn of
thyroid cartilage
Site for
arytenoid
Crico-tracheal
ligament
Dr.Sherif Fahmy

8. Epiglottis
Dr.Sherif Fahmy

9. Epiglottis
Stalk
Right thyroid lamina
Thyroepiglottic lig.
Dr.Sherif Fahmy

10. Epiglottis
Thyroid cartilage
Arytenoid
cartilage
Posterior quadrate
cricoid cartilage
Thyro-
epiglottic lig.
Posterior concave
smooth surface
Posterior aspect
Dr.Sherif Fahmy

11. Arytenoid cartilage
Thyroid cartilage
(cut)
Quadrangular
membrane
Epiglottis
Thyro-epiglottic lig.
Upper border
Lower border
Cricoid cartilage
Crico-thyroid
membrane
Dr.Sherif Fahmy

12. Thyroid cartilage
(cut)
Thyro-epiglottic
lig.
Hyoid bone
Hyo-epiglottic lig.
Vestibular fold
Arytenoid cartilage
Ary-epiglottic fold
Epiglottis
Quadrangular
membrane
Dr.Sherif Fahmy

13. Oral part
Pharyngeal
part
Median glosso-
epiglottic lig.
Lateral glosso-
epiglottic folds
Epiglottis
Dr.Sherif Fahmy

14. Arytenoid Cartilages
Dr.Sherif Fahmy

15. Arytenoid cartilage
Apex
Base
Vocal process
Muscular process
Cricoid cartilage
Muscular
process
Dr.Sherif Fahmy

16. Cricoid
cartilage
Arytenoid cartilage
Vocal process
Vocal cord
Posterior
quadrate lamina
Muscular processes
Dr.Sherif Fahmy

17. Corniculate &
Cuneiform Cartilages
Dr.Sherif Fahmy

18. Cricoid
cartilage (cut)
Arytenoid cartilage
Thyroid cartilage
(cut)
Quadrangular
membrane
Corniculate cartilage
Cuneiform
cartilage
Epiglottis
Dr.Sherif Fahmy

19. Ligaments,
Membranes & Folds
Dr.Sherif Fahmy

20. 1- Thyro-hyoid Memrane
Dr.Sherif Fahmy

21. Thyroid cartilage
Hyoid bone
Median thyrohyoid
lig.
Lateral thin part
Perforation for passage of
int. laryngeal n. and sup.
Laryngeal art.
Lateral
thyrohyoid lig.
Dr.Sherif Fahmy

22. 2- Ligaments & folds
attached to epiglottis
Dr.Sherif Fahmy

23. Arytenoid cartilage
Thyroid cartilage
(cut)
Quadrangular
membrane
Epiglottis
Thyro-epiglottic lig.
Upper border
Lower border
Dr.Sherif Fahmy

24. Thyroid cartilage
(cut)
Thyro-epiglottic
lig.
Epiglottis
Hyoid bone
Hyo-epiglottic lig.
Vestibular fold
Arytenoid cartilage
Ary-epiglottic fold
Quadrangular membrane
covered with mucus
membrane
Dr.Sherif Fahmy

25. Pharyngeal
part
Median glosso-
epiglottic lig.
Lateral glosso-
epiglottic folds
Epiglottis
Dr.Sherif Fahmy

26. 3- Ligaments attached to
Cricoid cartilage
Dr.Sherif Fahmy

27. Ligaments attached to Cricoid cartilage
Crico-tracheal
ligament
1st
tracheal
ring
Cricoid
cartilage
Dr.Sherif Fahmy

28. Crico-thyroid lig.
Crico-vocal lig.
Cricoid cartilage
Thyroid cartilage
Dr.Sherif Fahmy

29. Cricoid
cartilage (cut)
Vocal process
Crico-vocal lig.
Cricothyroid lig.
Thyroid
cartilage (cut)
Arytenoid cartilage
Vocal cord
Sagittal section of skeleton of larynx
Dr.Sherif Fahmy

30. Cavity of Larynx
(Page 148)
Dr.Sherif Fahmy

31. Vestibular fold
Arytenoid cartilage
Ary-epiglottic fold Vestibule
Sinus
Infraglottic
part
Cavity of larynx
Vocal fold
Epiglottis
Sagittal section
Dr.Sherif Fahmy

32. Vestibule
Infra-glottic
part
Sinus
Cavity of Larynx
Epiglottis
Ary-epiglottic fold
Vestibular fold
Vocal fold
Coronal section
Saccule
Dr.Sherif Fahmy

33. Inlet of Larynx
Dr.Sherif Fahmy

34. Posterior view
Posterior wall
of pharynx
(Cut)
Piriform recess
Inlet of larynx
Pathway of food
during swallowing Dr.Sherif Fahmy

35. Upper border of epiglottis
Ary-epiglottic fold
Inter-arytenoid
fold
Cuneiform cartilage
Corniculate cartilage
Inlet of larynx
Dr.Sherif Fahmy

36. Ary-epiglottic
fold
Vestibular fold
Vocal fold
Sinus of larynx
Thyroid
cartilage (cut)
Dr.Sherif Fahmy

37. Muscles of
Larynx
Dr.Sherif Fahmy

38. Crico-thyroid m.
Dr.Sherif Fahmy

39. Epiglottis
Thyroid cartilage
Arytenoid
cartilage
Posterior aspect
Transverse arytenoid
Oblique
arytenoid m.
Ary-epiglottic
m.
Posterior crico-
arytenoid m.
Cricoid cartilage
Dr.Sherif Fahmy

40. Cricoid
cartilage
Arytenoid cartilage
Vocal cord
Muscular processes
Lateral crico-
arytenoid m.
Vocalis m.
Dr.Sherif Fahmy

41. Posterior crico-
arytenoid m. Lateral crico-
arytenoid
Transverse arytenoid
Oblique arytenoid
Vocalis m.
Arytenoid
cartilage
Cricoid cartilage
Thyroid cartilage
Dr.Sherif Fahmy

42. Lateral crico-arytenoid
m.
Posterior crico-
arytenoid m.
Thyro-arytenoid m.
Thyro-epiglottic m.
Ary-epiglottic m.
Dr.Sherif Fahmy

43. Superior view
Arytenoid
Vocal lig
Vocalis m.
Thyro-
arytenoid m.
Dr.Sherif Fahmy

44. Quiet respiration
Deep inspiration
Dr.Sherif Fahmy

45. Abduction of vocal cord
Adduction of vocal cords
Closure of rima
glottidis
Dr.Sherif Fahmy

46. Nerve Supply
1- Superior laryngeal Nerve.
2- Recurrent laryngeal Nerve.
Dr.Sherif Fahmy

47. Blood Supply
1- Superior laryngeal artery.
2- Inferior laryngeal artery.
Dr.Sherif Fahmy

48. Applied Anatomy
Tracheostomy: A hole which is done in
trachea or crico-thyroid membrane in
case of laryngeal obstruction.
Dr.Sherif Fahmy