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Dissection of left buccal region

Buccinator muscle; buccal and molar glands; parotid duct; lateral view

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Image #63-7
Diagram Image
Legend Image
Dissection of left buccal region
Buccinator muscle; buccal and molar glands; parotid duct; lateral view
The masseter muscle has been cut away and the buccal fat pad (12) partially removed. Branches of the facial nerve (1,9) which entered the infraorbital plexus have been retracted upward. Other branches (18) which communicated with the buccinator nerve have been cut away. The insertions of canine and zygomatic muscles (6) have been elevated. The lumen of the parotid duct is visible as a small aperture on the cut end of the mass of connective and vascular tissue which surrounds the duct(15).
  1. Anastomosis of infraorbital branches of facial nerve with infraorbital nerve
  2. Infraorbital nerve
  3. Depressor anguli oris muscle
  4. Superior labial branches infraorbital nerve
  5. Orbicularis oris muscle
  6. Upper pointer: Zygomaticus muscle (cut off) Lower pointer: Inferior labial artery
  7. Angle of the mouth
  8. External maxillary artery
  9. Buccal branch facial nerve (retracted upward)
  10. Tendon of masseter muscle
  11. Tendon of temporalis muscle inserting on coronoid process of mandible
  12. Buccal fat pad
  13. Fascia enclosing fat pad
  14. Molar glands
  15. Parotid duct (note that the cut end of the duct itself, which is visible just above the pointer, is small in comparison to its surrounding sheath)
  16. Buccinator muscle and buccal glands
  17. Buccal nerve
  18. Cut ends of anastomotic branches of facial nerve
  19. Insertion of masseter muscle
  20. Buccinator muscle (inferior part)
  21. Marginal mandibular branches facial nerve
  22. Deep facial lymph node