View source for Frontonasal prominence

{{Infobox Embryology |
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  GraySubject   = 13  |
  GrayPage      = 67 |
  Image         = Gray44.png |
  Caption       = Under surface of the head of a human embryo about twenty-nine days old. (Frontonasal process labeled at center left.) |
  Image2        = |
  Caption2      = |
  System        = |
  CarnegieStage = |
  Precursor     = |
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  MeshName      = |
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  DorlandsPre   = p_36 |
  DorlandsSuf   = 12669829  |
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{{CMG}}



During the third week two areas of thickened [[ectoderm]], the olfactory areas, appear immediately under the [[fore-brain]] in the anterior wall of the [[stomodeum]], one on either side of a region termed the '''frontonasal prominence''' (or '''process'''). 

By the upgrowth of the surrounding parts these areas are converted into pits, the [[olfactory pits]], which indent the frontonasal prominence and divide it into a medial and two lateral nasal processes. 

==External links==
* {{EmbryologyUNC|hednk|027}}
* [http://www.indiana.edu/~anat550/hnanim/face/face.swf Flash animation at indiana.edu]
* {{eMedicine|ent|30}}

{{Gray's}}
{{Embryology of head and neck}}
[[Category:Embryology]]

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