Papillary lines

Papillary lines

Papillary lines can be found on the inside of your hands and on the bottom of your feet and toes. These are the lines you see on your fingertips, for example. The purpose of papillary lines is that we have more grip. Suppose you had no papillary line on your fingers, so your fingers are completely smooth, the chance that we let our glass of water slide out of our hands is a lot bigger. In the 18th century it was discovered that you can also identify someone with fingerprints, so in addition to grip, our lines on the fingers are also a means of identification. The combination of all your fingerprints are unique and no one else has them, even identical twins don't have the same fingerprints.