Frontalis

Time To Read

2–4 minutes

Date Last Modified


Ever raise your eyebrows in disbelief? Or squeeze them together in confusion? That’s your frontalis and it’s getting a workout in this class.

Anatomical model showing frontalis muscle (forehead muscle) with arrow pointing to it. Labeled muscles displayed
Anatomical model showing frontalis muscle (forehead muscle) with arrow pointing to it. Labeled muscles displayed
Photography, text, and labels by Rob Swatski, Assistant Professor of Biology, Harrisburg Area Community College – York Campus, York, PA.

Frontalis Origin

The frontalis muscle originates from the galea aponeurotica. This is a broad, fibrous sheet. It forms the upper part of the epicranial aponeurosis. The galea aponeurotica extends across the top of the skull. It connects the frontalis muscle to the occipitalis muscle at the back of the head. This aponeurosis serves as a common attachment site for both the frontalis and occipitalis muscles. It allows them to work together to move the scalp.

Frontalis Insertion

The frontalis muscle fibers originate and run downward. They converge into the skin of the forehead and the eyebrow region. The insertion points are primarily located in the skin above the eyebrows and in the horizontal folds of the forehead. This insertion allows the frontalis to exert its effects on the skin of the forehead, creating various facial expressions.

Frontalis Actions

Raising the Eyebrows

Creating Horizontal Wrinkles on the Forehead

Interactive Materials

🩻 Draw on an Image

Use your mouse or finger to draw directly on the image. Change your highlighter color, undo or redo strokes, clear, or download your annotated image.









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