The frontalis muscles serve one main function in the human body. Which of the following do they control?

The frontalis muscles are a matching pair of muscles that are vertically-oriented in the forehead, and serve to lift the eyebrows up. You'll notice that when you contract the frontalis, it also causes horizontal wrinkles to form in the foreheads. Botox to the rescue!

Asked by Tom Cohen · Last updated 5 years ago · 12.2K views