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Cranial Nerves

CN I: Olfactory Nerve

February 15th, 2021


  • Role

  • Special sensory (smell).

Olfactory Nerve Palsy

  • Abnormality

  • Anosmia.
  • Causes of Olfactory Nerve Palsy

  • Trauma - coup / contrecoup
  • Frontal lobe - trauma, ischaemia, tumour
  • Meningitis
  • Neurosyphillis


Processing / Association Centres
Uncus, hippocampus, frontal lobe
Olfactory Nucleus
Olfactory Bulb
Cribriform plate
Olfactory Receptor Nuclei
Osmoreceptors within nasal mucosa
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