The zygomaticus major muscle is a muscle that controls facial expression, drawing the mouth’s angle upward and outward. The zygomaticus major muscle starts at the cheekbone and extends to the corner ...

Cheek dimples are likely a genetic trait, although the specifics of how they’re inherited still aren’t clear. Share on Pinterest Dimples are small indentations that can be found on your skin. They can ...

Researchers have identified three distinct, reliably recognised expressions of smile -- reward, affiliation and dominance -- and the facial muscle combinations that make them. Each smile hinges on an ...