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 consists of (in technical terms) the septal cartilage, the vomer, the perpendicular plate of the ethmoid bone, the maxillary crest and the premaxilla. Deviation or dislocation of the nasal septum may be present at birth or occur subsequently from trauma. The major problem this causes is airway obstruction. Correction is by surgery. Septal hematoma is an accumulation of blood within the nasal septum. It is usually due to trauma. Treatment is incision (to drain the blood from the hematoma), packing of the nose (to keep the blood from reaccumulating) and antibiotics, if infected. Perforation of the nasal septum (a hole through it) can be due to trauma (a blow to the nose, picking the nose, etc), drug abuse (e.g., cocaine), an abscess, and some diseases (e.g., Wegner granulomatosis). Symptoms include crusting, bleeding, discharge and, most dramatically, whistling on inspiration (on breathing in). Treatment is surgical closure of the perforation (a procedure that frequently fails) or the insertion of a specially designed septal button.

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nasal septum n the bony and cartilaginous partition between the nasal passages

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s. nasi.

Medical dictionary. 2011.

Look at other dictionaries:

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  • 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

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  • 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 bony — pars ossea septi nasi …   Medical dictionary

  • nasal septum cartilaginous — pars cartilaginea septi nasi …   Medical dictionary

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