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Few people have ever heard of a filtrum, and yet it is usually as plain as the nose on one’s face. To be a bit more accurate, the filtrum is as plain as the area just under the nose on one’s face. It is no less than the name of the vertical groove found in the middle of the upper lip. More commonly it is known as a philtrum, or if you prefer to use the medical term, the infransal depression.
Other than being a very valuable piece of knowledge that can be displayed during trivia games, the filtrum serves no definite purpose. Some researchers think that it might help humans to form different sounds during speech, allowing the lips a certain freedom of movement. Having a filtrum is perfectly normal; the lack of this dimple is sometimes a sign of either fetal alcohol syndrome or mental retardation. The filtrum forms during embryonic development, and if the two sides of the upper lip fail to fully fuse, a person may be born with a cleft lip.
Dogs and cats also have filtrums. They are two of the few mammals in the animal kingdom, besides humans, that possess the feature. For the Lassie and Garfield set, however, the name applies to the meeting points of the two sides of the nose. The shallow groove serves no more purpose on these domesticated creatures than it does on humans.
On the other hand, filtrums are widely mentioned in mythology. Ancient Greeks considered it one of the most erogenous zones on the body, which is no small accomplishment when one considers that the ancient Greeks were heavily into the erotic aspects of life. Why early Greeks considered the filtrum such a sexy little dimple is not recorded in the writings or poetry of the time.
In the Talmud, it is written that angels teach babies all the world’s wisdom while they are still in the womb. As the story goes, the angel touches the baby under his nose just before birth. Some say this is to make the child forget that the angel was present, while others claim that it is a reminder to never speak of the heavenly secrets that have been imparted. In any case, the resulting depression caused by the angel’s finger is the filtrum.
Thank you for your information. Very educational, indeed.