Nasal septum - wikipedia Nasal septum This article uses anatomical terminology ; for an overview, see Anatomical terminology. This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. Please help to improve this article by introducing more precise citations. ( September 2017 ) Nasal septum Bones and cartilages of septum of nose. Right side. Details Artery Anterior ethmoidal posterior ethmoidal sphenopalatine greater palatine branch of superior labial Nerve Anterior ethmoidal nasopalatine nerves Identifiers Latin Septum nasi MeSH A02. 165.407. 600 Dorlands / Elsevier s_08 / 12730490 TA A06. 1.02. 004 FMA 54375 Anatomical terminology ( edit on Wikidata ) The nasal septum ( Latin : septum nasi ) separates the left and right airways in the nose, dividing the two nostrils. It is depressed by the depressor septi nasi muscle. Contents 1 Structure 1.1 Development 2 Clinical significance 2.1 Cosmetic procedures 3 Additional images 4 See also 5 References 6 External links Structure The fleshy external end of the nasal septum is sometimes also called columella. The nasal septum contains bone and hyaline cartilage. It is normally about 2 mm thick. The nasal septum is composed of five structures : perpendicular plate of ethmoid bone vomer bone septal nasal cartilage crest of the maxillary bone crest of the palatine bone Development Vomer of infant At an early period the septum of the nose consists of a plate of cartilage, the ethmovomerine cartilage. The postero - superior part of this cartilage is ossified to form the perpendicular plate of the ethmoid ; its antero - inferior portion persists as the septal cartilage, while the vomer is ossified in the membrane covering its postero - inferior part. Two ossification centers, one on either side of the middle line, appear about the eighth week of fetal life in this part of the membrane, and hence the vomer consists primarily of two lamellae. About the third month these unite below, and thus a deep groove is formed in which the cartilage is lodged. As growth proceeds, the union of the lamellae extends upward and forward, and at the same time the intervening plate of cartilage undergoes absorption. By the onset of puberty the lamellae are almost completely united to form a median plate, but evidence of the bilaminar origin of the bone is seen in the everted alae of its upper border and in the groove on its anterior margin. Clinical significance The nasal septum can depart from the centre line of the nose in a condition that 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. The nasal septum can be affected by both benign ( fibroma, inflammatory hemangioma of the nasal septum -- `` bleeding polyp '', etc. ) and malignant tumors ( squamous cell carcinoma, esthesioneuroblastoma, etc. ). Cosmetic procedures The inferior part of the nasal septum can be pierced, usually through the soft tissue but the piercing can also transverse ( partially ) the cartilage of the septum. Additional images Horizontal section of nasal and orbital cavities. Left orbicularis oculi, seen from behind. Cartilages of the nose, seen from below. Coronal section of nasal cavities. Front of nasal part of pharynx, as seen with the laryngoscope. MRI image showing nasal septum. MRI image showing deviated septum See also Anatomy portal Nose Nasal septum piercing References ^ Jump up to : lesson9 at The Anatomy Lesson by Wesley Norman ( Georgetown University ) Jump up ^ Saladin, Kenneth S. ( 2012 ). Anatomy and Physiology ( 6th ed. ). New York, NY : McGraw Hill. p. 856. ISBN 9780073378251. Jump up ^ Liong, Kyrin ; Lee, Shu Jin ; Lee, Heow Pueh ( 2013 ). `` Preliminary Deformational Studies on a Finite Element Model of the Nasal Septum Reveals Key Areas for Septal Realignment and Reconstruction ''. Journal of Medical Engineering. 2013 : 1 -- 8. ISSN 2314 - 5129. doi : 10.1155 / 2013 / 250274. Jump up ^ 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. This article incorporates text in the public domain from the 20th edition of Gray 's Anatomy ( 1918 ) External links Wikimedia Commons has media related to Nasal septum. Anatomy figure : 33 : 02 - 01 at Human Anatomy Online, SUNY Downstate Medical Center - `` Diagram of skeleton of medial ( septal ) nasal wall. '' Diagram at evmsent.org lesson9 at The Anatomy Lesson by Wesley Norman ( Georgetown University ) ( nasalseptumbonescarti ) Anatomy of the human nose External nose Ala of nose nasal cartilages of the septum Greater alar Lesser alar Lateral nasal Accessory nasal Vomeronasal Nasal cavity Openings Nasal vestibule Nostril Posterior nasal apertures Lateral wall Nasal conchae : Supreme nasal concha Superior nasal concha Middle nasal concha Inferior nasal concha Nasal meatus : ( Supreme superior middle inferior ) Sphenoethmoidal recess Ethmoid bulla Agger nasi Ethmoidal infundibulum Semilunar hiatus Maxillary hiatus Medial wall Nasal septum Vomeronasal organ Mucous membrane Olfactory mucosa Paranasal sinuses Maxillary sinus Sphenoidal sinuses Frontal sinus Ethmoid sinus Naso - pharynx Pharyngeal opening of auditory tube Salpingopharyngeal fold Salpingopalatine fold Torus tubarius Pharyngeal tonsil Pharyngeal recess Retrieved from `` https://en.wikipedia.org/w/index.php?title=Nasal_septum&oldid=800901437 '' Categories : Wikipedia articles incorporating text from the 20th edition of Gray 's Anatomy ( 1918 ) Nose Hidden categories : Articles lacking in - text citations from September 2017 All articles lacking in - text citations Medicine infobox template using GraySubject or GrayPage Medicine infobox template using Dorlands parameter Articles containing Latin - language text Wikipedia articles needing page number citations from September 2017 Talk Contents About Wikipedia Azərbaycanca Català Deutsch Español فارسی Français Galego Italiano עברית Magyar Nederlands 日本 語 Plattdüütsch Polski Português Русский Simple English Српски / srpski Suomi ไทย Türkçe Українська 中文 Edit links This page was last edited on 16 September 2017, at 11 : 52. 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Question: what type of supporting tissue is lower part of your nose made of
Answer: hyaline cartilage