External surface of squamous part of frontal bone
Facies externa squamae frontalis
- Synonym: Outer surface of squamous part of frontal bone
- Related terms: External surface
Definition
The external surface of squamous part of frontal bone has a convex shape and includes several important anatomical features that make up the forehead area of the skull. There are two prominent superciliary arches located just above the superior orbital rim. These arches are separated by a smooth, central bony ridge called the glabella, which is found directly above the bridge of the nose. Slightly higher than the superciliary arches, on both sides, are two noticeable bumps known as frontal eminences. Sometimes traces of the frontal or metopic suture can be observed on the lower part of the external surface of squamous part of frontal bone along the midline.
References
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Text written by Muhammad A. Javaid, MD, PhD © 2024 IMAIOS.
Singh O, Varacallo M. Anatomy, Head and Neck: Frontal Bone. [Updated 2023 Jul 24]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK535424/
Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 8: Head and Neck’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp.812-813.
