The |occipito-frontalis| is a broad musculo-fibrous layer that cover the epicranium (top of the |skull|). It consists of two thin layers of muscle. The occipital portion, sometimes called the occipitalis muscle, is quadrilateral in form and about an inch and a half in length. It covers the back of the cranium (skull). The frontal portion, sometimes called the frontalis, is also quadrilateral in form. It is broader and its |fibers| are longer. It covers the forehead. The front part of this muscle helps wrinkle forehead and raise the eyebrows. The frontalis and occipitalis portions of the muscle run continuously across the cranium (skull) with the galia aponerotica. The aponeurosis is located above the occipito and frontalis muscle and covers the top of the cranium (skull). It works with the |occipito-frontalis| muscles to move the scalp.
