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Dissection of nose

External nasal nerve; arteries of nose, left anterolateral view

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Image #71-1
Diagram Image
Legend Image
Dissection of nose
External nasal nerve; arteries of nose, left anterolateral view
The transverse part of the nasal muscle has been removed. Two branches (6,8) of the external nasal nerve are visible. These emerge through the membrane which covers the junction of the nasal bone and lateral nasal cartilage. A filament of the external nasal branch (10) of the infraorbital nerve crosses the external nasal nerves superficially. No communication was found between the nerves.
  1. Branch infratrochlear nerve
  2. Procerus muscle
  3. Dorsal nasal artery
  4. Periosteum of nasal bone
  5. Angular head of levator labii superioris muscle
  6. External nasal branch of anterior ethmoidal nerve (medial branch)
  7. Transverse part of nasalis muscle
  8. External nasal branch of anterior ethmoidal nerve (lateral branch)
  9. Perichondrium of lateral nasal cartilage
  10. External nasal branch of infraorbital nerve
  11. Apex of nose
  12. Naris
  13. Ala nasi
  14. Infratrochlear nerve
  15. Middle palpebral artery
  16. Frontal artery
  17. Orbicularis oculi muscle (cut across)
  18. Superior tarsus
  19. Medial palpebral ligament
  20. Palpebral part of orbicularis oculi muscle
  21. Angularis artery and vein
  22. Orbital part orbicularis oculi muscle
  23. Nasal branch of angular artery
  24. Alar branch of angular artery
  25. Infraorbital head of levator labii superioris muscle