View source for Nasal septum

{{Infobox Anatomy |
  Name         = {{PAGENAME}} |
  Latin        = septum nasi |
  GraySubject  = 223 |
  GrayPage     = 993 |
  Image        = Gray854.png |
  Caption      = Bones and cartilages of septum of nose. Right side. |
  Image2       = |
  Caption2     = |
  Precursor    = |
  System       = |
  Artery       = [[anterior ethmoidal artery|anterior ethmoidal]]<BR>[[posterior ethmoidal artery|posterior ethmoidal]]<BR>[[sphenopalatine artery|sphenopalatine]]<BR>[[greater palatine artery|greater palatine]]<BR>branch of [[superior labial artery|superior labial]]<ref name="Norman">{{NormanAnatomy|lesson9}}</ref> |
  Vein         = |
  Nerve        = [[anterior ethmoidal nerve|anterior ethmoidal]]<BR>[[nasopalatine nerve|nasopalatine]]<ref name="Norman"> </ref> |
  Lymph        = |
  MeshName     = Nasal+septum |
  MeshNumber   = A02.165.407.600 |
  DorlandsPre  = s_08 |
  DorlandsSuf  = 12730490  |
}}

{{CMG}}



The '''nasal septum''' separates the left and right airways in the [[nose]], dividing the two [[nostrils]]. 

It is [[Depression (kinesiology)|depressed]] by the [[Depressor septi nasi muscle]].

==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]]. Trauma, 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]].
{{clr}}
==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 showing nasal septum.
</gallery>

==References==
<references/>

==External links==
* {{eMedicineDictionary|Nasal+septum}}
* {{SUNYAnatomyFigs|33|02|01}} - "Diagram of skeleton of medial (septal) nasal wall."
* [http://www.evmsent.org/images/septum_side2.GIF Diagram at evmsent.org]

{{Head and neck general}}
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[[ar:حاجز الأنف]]
[[de:Nasenscheidewand]]
[[fr:Septum nasal]]
[[hu:Orrsövény]]
[[simple:Nasal septum]]
[[zh:鼻中隔]]
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{{WikiDoc Sources}}