The space between the nose and the upper lip is one of the most interesting cavities a human can have. These questions have been on the minds of biologists for a long time: why does the cavity appear and how?
In fact, we are talking about a little cavity under the nose that goes to the edge of the upper lip. It is called the philtrum. But what is it and why do we have it?
According to IFL Science, the explanation has to do with the way the face is shaped during growth and development.
There are three parts connected by the philtrum.
Dr. Michel Mosley explains, “On this location is located the connective point of the human face after formation.”
On the upper lip, three major parts meet to form a cavity called the philtrum.
In general, the development of the face occurs during the second or third month of pregnancy. If the face does not form during this period due to genetics or other factors, then it probably wouldn’t happen.