Frontal sinus
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| Frontal sinus | |
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| Paranasal sinuses | |
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| Nose and nasal cavities | |
| Latin | sinus frontales |
| Gray's | subject #223 998 |
| Artery | supra-orbital, anterior ethmoidal |
| Nerve | supraorbital nerve |
| MeSH | Frontal+Sinus |
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The frontal sinuses, situated behind the superciliary arches, are rarely symmetrical, and the septum between them frequently deviates to one or other side of the middle line.
Their average measurements are as follows: height, 3 cm.; breadth, 2.5 cm.; depth from before backward, 2.5 cm.
Each opens into the anterior part of the corresponding middle meatus of the nose through the frontonasal duct which traverses the anterior part of the labyrinth of the ethmoid. These structures then open into the hiatus semilunaris in the middle meatus.
The mucuous membrane in this sinus is innervated by the supraorbital nerve and supplied by the supraorbital artery and anterior ethmoidal artery.
Absent at birth, they are generally fairly well developed between the seventh and eighth years, but only reach their full size after puberty.
Additional images
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 Frontal bone. Inner surface. |
 Medial wall of left orbit. |
 Lateral wall of nasal cavity. |
 Sagittal section of nose mouth, pharynx, and larynx. |
 Outline of bones of face, showing position of air sinuses. |
See also
External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. Template:Skull
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Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
