Nasal pit

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Nasal pit
Head end of human embryo, about the end of the fourth week.
Latin fovea nasalis
Gray's p.68
Code TE E5.
Anatomical terminology

By the upgrowth of the surrounding parts the olfactory areas are converted into pits, the nasal pits or olfactory pits, which indent the fronto-nasal process and divide it into a medial and two lateral nasal processes.

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This article incorporates text from a public domain edition of Gray's Anatomy.