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How is the sensory nerve supply to the nose mapped ?

| March 4, 2013 | 0 Comments

How is the sensory nerve supply to the nose mapped ?

  • Olfactory fibers are located in the superior portion of the internal nose and serve the sensory function of smell.
  • The sensory innervation of the skin of the root of the nose is derived from the supratrochlear and infratrochlear branches of the ophthalmic nerve.
  • Branches of the infraorbital nerve supply the skin on the lower half of the nose’s side.
  • Nasociliary branches of the ophthalmic nerve supply the skin over the lower dorsum of the nose down to the tip.
  • The trigeminal nerve supplies general sensory innervation to the anterior internal nose through the anterior ethmoidal, external, and internal nasal branches.

 

  • The lateral posterior superior, pharyngeal, \and lateral posterior inferior branches of the maxillary nerve supply the posterior portion.
  • The terminal branches of the infraorbital nervesupply the lining of the nasal vestibule.
  • The internal nasal (anterior ethmoidal) and medial posterior superior branches supply the septum anterior and posterior portions, respectively.
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