![]() ![]() An inferior bundle inserts below the corner of the mouth. As it travels anteriorly, it then divides with a superior bundle that inserts in the typical position above the corner of the mouth. This bifid variation of the muscle originates as a single structure from the zygomatic bone. A rarer form is the single dimple, which occurs on one side of the face only. Having bilateral dimples (dimples in both cheeks) is the most common form of cheek dimples. Dimples are genetically inherited and are a dominant trait. ![]() Cultural differences Ĭheek dimples are formed secondary to a bifid zygomaticus major muscle, whose fascial strands insert into the dermis and cause a dermal tethering effect. It may take the form of positive reinforcement, possibly for an underhand manipulative and abusive purpose. The influence of smiling on others is not necessarily benign. The researchers did not explicitly study the role of smiles in other sexual preferences. However, recent research indicates a man's smile may or may not be most effective in attracting heterosexual women, and that facial expressions such as pride or even shame might be more effective. Female smiles are appealing to heterosexual males, increasing physical attractiveness and enhancing sex appeal. One of these is an advertisement of sexual interest. Smiling is a signaling system that evolved from a need to communicate information in many different forms.
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