The philtrum, or indentation above the upper lip in humans, may allow for greater lip movement, but its purpose is not entirely clear. It has been speculated to be connected with love and is present in most mammals. A flat philtrum can be a sign of fetal alcohol syndrome, and its length and shape are genetically determined.
It’s not entirely clear what the filter’s purpose is – the indentation above the upper lip in humans – other than allowing for a greater range of lip movement. However, there are many legendary speculations about the purpose of the philtrum. The ancient Greeks thought the philter was connected with love. In fact, “philtrum” comes from the Ancient Greek philtron, meaning “love charm” or “kiss.” Even the ancient Greeks considered it one of the most exciting places on the body. In Jewish mythology, the philtrum comes from an angel who places his finger on a child’s mouth to silence him and cause him to forget heavenly knowledge about him.
Learn more about filters:
A smooth or flat filter can be a sign of fetal alcohol syndrome.
Humans aren’t the only ones to have filters. Most mammals, including dogs and many primates, also have a filter.
The length and shape of the filter in humans are genetically determined. If the philtrum does not form properly, a child may have a cleft lip or cleft lip.
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