|Bones and cartilages of septum of nose. Right side.|
|Gray's||subject #223 993|
branch of superior labial
nasopalatine nerves 
The fleshy external end of the nasal septum is sometimes also called columella. The nasal septum contains bone and hyaline cartilage.
The nasal septum is composed of five structures:
- perpendicular plate of ethmoid bone
- vomer bone
- cartilage of the septum
- crest of the maxillary bone
- crest of the palatine bone
The nasal septum can depart from the centre line of the nose in a condition is known as a deviated septum caused by trauma. However, it is normal to have a slight deviation to one side. The septum generally stays in the midline until about the age of seven, at which point it will frequently deviate to the right.
A perforated nasal septum can be caused by an ulcer, trauma due to an inserted object, long-term exposure to welding fumes, or cocaine use. There is a procedure that can be of help to those suffering from perforated septum. A silicone button can be inserted in the hole to close the open sore. An operation to the nasal septum is known as a septoplasty.
- lesson9 at The Anatomy Lesson by Wesley Norman (Georgetown University)
- Saladin, Kenneth S. (2012). Anatomy and Physiology (6th ed.). New York, NY: McGraw Hill. p. 856. ISBN 9780073378251.
- Lee, Choong Ryeol; Yoo, Cheol In; Lee, Ji Ho; Kang, Seong Kyu (2002). "Nasal Septum Perforation of Welders". Journal of Industrial Health 40 (3): 286–289. doi:10.2486/indhealth.40.286.
- Nasal+septum at eMedicine Dictionary
- SUNY Figs 33:02-01 - "Diagram of skeleton of medial (septal) nasal wall."
- Diagram at evmsent.org
- lesson9 at The Anatomy Lesson by Wesley Norman (Georgetown University) (nasalseptumbonescarti)