Frontonasal prominence

Infobox Embryology
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Caption = Under surface of the head of a human embryo about twenty-nine days old. (Frontonasal process labeled at center left.)


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DorlandsPre = p_36
DorlandsSuf = 12669829
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

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* [http://www.indiana.edu/~anat550/hnanim/face/face.swf Flash animation at indiana.edu]
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Look at other dictionaries:

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