Vomer

Dr Craig Hacking and Dr Henry Knipe et al.

The vomer is one of the facial bones and forms the postero-inferior part of the bony nasal septum. It is unpaired and lies in the midline between the two nasal cavities.

It is a thin flat bone that is trapezoidal in shape with two surfaces that are obliquely grooved by the sphenopalatine (nasopalatine) vessels and nerves.

The vomer has 4 borders:

  • superior: thickest border with laterally projecting alae which articulate with the rostrum of the sphenoid bone body. The alae also articulate with the:
  • inferior: articulates with the median nasal crests of the maxilla and palatine bones, between the incisive canals
  • anterior: longest border which articulates with:
    • the perpendicular plate of the ethmoid bone along its upper half
    • the nasal septal cartilage along its lower half
  • posterior: short concave border the is thicker (and bifid) superiorly, which does not articulate with any bone, but rather separates the choanae.

The vomerovaginal canal is formed between the ala, body of the sphenoid and the small medially directed vaginal process arising from the sphenoid bone.

Variant anatomy

Occasionally the sphenoid sinus may pneumatize the vomer 2.

Anatomy: Head and neck
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Article information

rID: 37542
System: Head & Neck
Section: Anatomy
Tag: nose
Synonyms or Alternate Spellings:

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Cases and figures

  • Case 1: pneumatization
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