Why is there a line under the nose?

 Why there is a line under the nose of humans?

Have you ever wondered why there is a line above the lips and below the nose and what its purpose is?
It is called 'Philtrum' in medical parlance and in practice, it is not for any purpose or aimless.

Where does the dimple between the nose and the lips come from?

Called philtrum, this dimple located between the nose and the lips, is actually the mark of the fusion between the different parts of the face during the development of the fetus.

Have you ever wondered where that little dimple just below your nose comes from, the one that continues to your lips? We all have it, it is present on the face of all humans just like the nose or the eyes, even if it does not always appear as pronounced from one individual to another.

Scientifically, this dimple is called the philtrum. But why is he there? In the literature, it is associated with the myth of the angel which explains all the secrets of life to the fetus. The latter would put his finger on the lips of the future child so that he forgets everything just before his birth. This is how the philtrum would form, which in fact perfectly matches the shape of a finger.

Why does it happen on every face?

In fact, this line is formed in the mother's womb, because there are times at the beginning of pregnancy when every child loses a face. After two to three months, changes begin to take place and the face begins to form.

First, the nostrils and then the mouth is formed and then they move to the place where everyone has a nose and a mouth. So when the nose and lips reach their place, this line appears.
Sometimes the nose and lips do not move properly, so the cut lips are visible on the face.

This line is common not only in humans but also in most mammals and is pointless for them as well.
But in cats and dogs, it is useful and it helps their sense of smell.