Dimples are formed by muscle activity under the skin. Most muscles of human body are firmly attached to bones through tendon fibers, such as pectoral muscles and lower limb muscles.
Facial expression muscles are an exception. It is directly attached to the facial skin. When the expression muscles contract, it affects the facial skin, so various wrinkles appear on the face, resulting in expressions of joy, anger, sadness and joy. The two dimples on the smiling face are formed by the relative influence of facial skin and facial expression muscles such as hamstring muscle and laughing muscle. ?
Whether there are dimples is related to the development of expression muscles. People with less plump smiling muscles and less subcutaneous fat on their faces generally have no dimples when they smile. In fact, it can also be made by surgery the day after tomorrow.
Extended data
Types of dimples
The first type: ordinary cheek dimples. This kind of dimple is a common dimple, that is, when you laugh, there will be a little dent on your cheek.
The second type: long dimples. The position of the dimples is the same as just now, and they are also cheeks. It's just that there is a difference in size ~ just now we are talking about sunken points and long dimples, which, as the name implies, are relatively long.
The third type: pear vortex. The pear vortex is very small and its position is different. It grows near the corners of the mouth. If a girl has a pear vortex, she will generally feel like a young lady next door, pure and lovely, full of youth.
The fourth kind: Indian dimples. This dimple grows on risorius, and it will appear under the eyes when you smile.
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