Visible at top left colored in red
|Venter frontalis musculi occipitofrontalis|
The frontalis muscle (frontal belly) is
In humans, the frontalis muscle only serves for facial expressions.
The frontalis muscle is thin, of a quadrilateral form, and intimately adherent to the
The muscle has no bony attachments. Its medial fibers are continuous with those of the
In the eyebrows, its primary function is to lift them (thus opposing the orbital portion of the orbicularis), especially when looking up. It also acts when a view is too distant or dim.
The medial margins of the frontalis muscles are joined together for some distance above the root of the