page_title: Ethmoidal nerves
hierarchical_section_title: Ethmoidal nerves
caption_attribution_description: Nerves of the orbit, and the ciliary ganglion. Side view.
context_page_description: The ethmoidal nerves, which arise from the nasociliary nerve, supply the ethmoidal cells; the posterior branch leaves the orbital cavity through the posterior ethmoidal foramen and gives some filaments to the sphenoidal sinus. There are two ethmoidal nerves on each side of the face:
  posterior ethmoidal nerve
  anterior ethmoidal nerve
context_section_description: The ethmoidal nerves, which arise from the nasociliary nerve, supply the ethmoidal cells; the posterior branch leaves the orbital cavity through the posterior ethmoidal foramen and gives some filaments to the sphenoidal sinus. There are two ethmoidal nerves on each side of the face:
  posterior ethmoidal nerve
  anterior ethmoidal nerve
caption: Nerves of the orbit, and the ciliary ganglion seen from the side
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