Anatomy for physical Therapy and Respiratory Care under graduate students

1. Anatomy of
The Larynx
RESPIRATORY SYSTEM
By:
Dr. Kamal Motawei

2. Larynx (voice box)
•Why! :
–Sphincter action
–Voice production
•Where!
In the upper part of the front of the neck.
Opposite C3-C6.
It opens into the laryngopharynx and is continuous with the trachea

3. Relations of the larynx
•Anterior:
–Skin
–Infrahyoid muscles
–Pyramidal lobe of thyroid
•Lateral:
–Great vessels of the neck
–Thyroid lobe
•Posterior:
–laryngopharynx

4. Structure of the Larynx
•The larynx is made up of:
–Cartilages
–Ligaments & membranes
–Muscles
–Mucous membrane
–It has nerves & blood vessels

5. Cartilages of the Larynx
•Single:
–Epiglottis
–Thyroid
–Cricoid
•Paired:
–Arytenoids
–Corniculates
–Cuneiforms

6. Cartilages of the larynx

7. Cartilages of the larynx

8. Cartilages of the larynx

9. Cartilages of the larynx

10. Cartilages of the larynx

12. Membranes & Ligaments
•Thyrohyoid membrane
•Median & Lateral thyrohyoid ligaments
•Fibroelastic membrane:
–Upper part: Quadrangular membrane. Its lower border forms the vestibular ligaments
–Lower part: cricothyroid ligament. Its upper border forms the vocal ligaments
•Aryepiglottic folds

13. Inlet It is directed backwards and upwards into the hypopharynx
•Boundaries:
–Epiglottis: infront
–Aryepiglottic folds: sides
–Arytenoids & interarytenoid fold: behibd
•Valliculae
•Piriform fossae

14. Cavity of the larynx
•Upper part of the cavity (Vestibule)
•Middle part:
- Rima vestibuli
- Sinuses and saccules of the larynx
-Rima glottidis
•Lower part