Nasal septum

Nasal septum
Nasal septum
Gray854.png
Bones and cartilages of septum of nose. Right side.
Latin septum nasi
Gray's subject #223 993
Artery anterior ethmoidal
posterior ethmoidal
sphenopalatine
greater palatine
branch of superior labial[1]
Nerve anterior ethmoidal
nasopalatine[1]
MeSH Nasal+septum

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

It is depressed by the Depressor septi nasi muscle.

Contents

Composition

The fleshy external end of the nasal septum is sometimes also called columella.

The nasal septum is composed of five structures:

Clinical significance

The nasal septum can depart from the centre line of the nose in a condition is known as a deviated septum due to 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 7, 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, excessive nose-picking, long-term exposure to welding fumes,[2] or cocaine abuse. 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 malign 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

References

  1. ^ a b lesson9 at The Anatomy Lesson by Wesley Norman (Georgetown University)
  2. ^ Nasal Septum Perforation of Welders, Choong Ryeol Lee, Cheol In Yoo, Ji Ho Lee, Seong Kyu Kang. Journal of Industrial Health. Volume 40, Number 3. p 286-289. Last accessed April 2, 2009.

See also

v · d · eHead and neck, upper RT: Nose (TA A06.1, TH H3.05.01, GA 10.992)
External nose
Nasal cavity
Openings
Lateral wall
Medial wall
Nasal septum · Vomeronasal organ
Paranasal sinuses
Naso-pharynx

M: RES

anat(n, x, l, c)/phys/devp

noco(c, p)/cong/tumr, sysi/epon, injr

proc, drug(R1/2/3/5/6/7)



External links


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Look at other dictionaries:

  • Nasal septum — The dividing wall within the nose. The nasal septum runs down the middle of the nose creating two sides to the nose, each containing a passageway that ends in a nare (nostril). The nasal septum is not as simple a structure as it may seem. It… …   Medical dictionary

  • Nasal septum perforation — Classification and external resources ICD 10 J34.8 ICD 9 478.1 A nasal septum perforation …   Wikipedia

  • Nasal septum deviation — Deviated septum Classification and external resources [[File: A CT scan of the head showing the inner workings of the nos …   Wikipedia

  • Nasal septum deviation — Failure of the nasal septum to be in the midline where it is supposed to be. (The nasal septum is the wall inside the nose that runs down the middle dividing it into two sides.) Deviation of the nasal septum may be congenital (present at birth)… …   Medical dictionary

  • Nasal septum perforation — A hole in the nasal septum, the wall inside the nose that runs down the middle dividing it into two sides. The hole provides a direct communication between the two normally separate sides of the nose. Perforation of the nasal septum can be due to …   Medical dictionary

  • Nasal septum hematoma — An accumulation of blood within the nasal septum, the wall inside the nose that runs down the middle dividing it into two sides. Most nasal septum hematomas are due to trauma. Treatment is incision (to drain the blood from the hematoma), packing… …   Medical dictionary

  • nasal septum — noun a partition of bone and cartilage between the nasal cavities • Hypernyms: ↑septum • Part Meronyms: ↑vomer * * * noun : the bony and cartilaginous partition between the nasal passages …   Useful english dictionary

  • nasal septum — noun A septum in the nose, separating the left and right airways in the nose, dividing the two nostrils. See Also: deviated septum …   Wiktionary

  • Deviation of the nasal septum — Failure of the nasal septum to be in the center where it is supposed to be. (The nasal septum is the wall inside the nose that runs down the middle dividing it into two sides.) Deviation of the nasal septum may be congenital (present at birth) or …   Medical dictionary

  • Perforation, nasal septum — A hole in the nasal septum, the wall inside the nose that runs down the middle dividing it into two sides. The hole provides a direct communication between the two normally separate sides of the nose. Perforation of the nasal septum can be due to …   Medical dictionary

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