What is Nasal septum?
[[Image:Gray854.png|thumb|Bones and cartilages of septum of nose. Right side.]] The '''nasal septum''' separates the left and right airways in the [[nose]] and divides the two [[nostril]]s. ==Composition== The fleshy external end of the nasal septum is sometimes also called ''columella''. The nasal septum is composed of three structures: * [[ethmoid bone]] * [[vomer bone]] * [[quadrangular cartilage]] ==Clinical significance== The nasal septum can depart from the centreline of the nose; this condition is known as a [[deviated septum]]. [[Injury]], excessive nose-picking and cocaine usage can cause septum [[Perforated septum|perforations]], or holes developing in the septum. An [[Surgery|operation]] to the nasal septum is known as a [[septoplasty]]. ==Additional images== <gallery> Image:Gray191.png|Horizontal section of nasal and orbital cavities. Image:Gray379.png|Left orbicularis oculi, seen from behind. Image:Orrsövény.PNG|Cartilages of the nose, seen from below. Image:Gray859.png|Coronal section of nasal cavities. Image:Gray1203.png|Front of nasal part of pharynx, as seen with the laryngoscope. Image:Maxillary_sinus_MRI.jpg|MRI image showimg nasal septum. </gallery> ==Other websites== * [http://www.evmsent.org/images/septum_side2.GIF Diagram at evmsent.org] {{Webarchive|url=https://web.archive.org/web/20060504081405/http://www.evmsent.org/images/septum_side2.GIF |date=2006-05-04 }} {{Biology-stub}} [[Category:Nose]]