How dimples are formed

How are dimples formed?

Dimples are formed by muscle activity under the skin. Most of the human body's muscles are firmly attached to the bones by tendon fibers, such as the pectoral muscles and lower limb muscles. The facial expression muscles are an exception. They are directly attached to the facial skin. When the expression muscles contract, they will affect the facial skin. As a result, various wrinkles appear on the face, producing expressions of joy, anger, sorrow, and joy. The two small dimples on a smiling face are formed by the relative movement of facial skin and facial expression muscles such as buccal and smiling muscles.

Whether there are dimples is related to the degree of development of expression muscles. People with less full laughing muscles and less subcutaneous fat on the face generally do not have small dimples when smiling. In fact, dimples can also be made the day after surgery.

Some people have a dominant inheritance of dimples.

Dominant inheritance means that as long as there is a dominant gene in a pair of genes, the traits determined by it will be displayed without pairing. For example, the beauty tip and double eyelids are dominant inheritance. In fact, it can also be done the day after surgery.