X CLOSE

Dissection of pharynx from left lateral approach

Interior of auditory tube

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Image #66-5
Bassett Image
Diagram Image
Legend Image
Dissection of pharynx from left lateral approach
Interior of auditory tube
The levator veli palatini muscle has been partially resected and the auditory tube opened.
  1. Optic nerve (II)
  2. Inferior rectus muscle
  3. Maxillary nerve (V)
  4. Sphenoid sinus
  5. Sphenopalatine ganglion
  6. Internal maxillary artery (cut across near termination)
  7. Maxillary sinus
  8. Mucosa of inferior nasal meatus
  9. Descending palatine artery
  10. Tendon of tensor veli palatini muscle (cut off)
  11. Bursa tensor veli palatini muscle
  12. Dorsum of tongue
  13. Superior pharyngeal constrictor muscle (upper pointer, pterygopharyngeus muscle; lower pointer, buccopharyngeus muscle)
  14. Upper pointer: Internal carotid artery Lower pointer: Oculomotor nerve (III)
  15. Tegmen tympani
  16. Chorda tympani
  17. Promontorium tympani and tympanic plexus
  18. Tensor tympani muscle
  19. Upper pointer: Bony part auditory tube (dark area on medial wall indicates position of carotid canal) Lower pointer: Isthmus auditory tube
  20. Lateral plate I cartilaginous auditory tube
  21. Scaphoid fossa sphenoid bone (site of origin of tensor veli palatini muscle)
  22. Upper pointer: Cartilaginous part auditory tube Lower pointer: Bony pharyngeal auditory tube
  23. Pharyngeal branch ascending pharyngeal artery
  24. Internal jugular vein
  25. Upper pointer: Alar fascia Lower pointer: Internal carotid artery
  26. Upper pointer: Pharyngobasilar fascia Lower pointer: Cut end of levator veli palatini muscle
  27. Styloid process
  28. Glossopharyngeal nerve (IX)
  29. Vagus nerve (X)