Sunday, June 24, 2018

Philtrum Groove Between Nose and Mouth

Philtrum - Wikipedia
https://en.wikipedia.org/wiki/Philtrum

The philtrum or medial cleft, is a vertical indentation in the middle area of the upper lip, common to many mammals, extending in humans from the nasal ... survives only as a vestigial medial depression between the nose and upper lip.


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