The sleep skeleton is a mix of bone and also cartilage which creates both what we can see as the exterior nose and the inner nasal septum – i m sorry divides the two nasal cavities of the head.

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Here us will talk about the anatomy the the sleep skeleton and its component bones.


Anatomical Structure

The skeleton that the nose is formed by three varieties of tissue; bone, cartilage and also fibro-fatty tissue. As soon as looking at the scaffolding of the nose, the is helpful to division the structures right into two parts; the external nasal skeleton and also internal nasal septum.

External nasal Skeleton


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figure 1 – Lateral check out of the exterior nasal skeleton


The external skeleton extends the nasal cavities ~ above the prior of the challenge (see figure 1). The is partly formed by the nasal and also maxillary bones, i m sorry are situated superiorly. The inferior section of the sleep is consisted of of hyaline cartilages; lateral, significant alar, boy alar, and also the cartilaginous septum. The lateral and major alar cartilages room the largest, and also contribute the most to the form of the sleep here. The boy alar cartilages differ in number, there are usually 3 or 4 on each side.

Internal nasal Septum

The inner nasal septum the end the sleep cavity into two nostrils. The skeletal that contribute to the nasal septum can be separated into:

Paired bones: Nasal, maxillary and also palatine bonesUnpaired bones: Ethmoid and also vomer bones.

In addition to the bones of the nose, the septal and also greater alar cartilages likewise constitute component of the sleep septum.

The ethmoid contributes to the main portion of nasal septum. It is one of the most complex bones in the person body, and also its structure is beyond the scope of this article, however more information have the right to be uncovered here. The anterior and also posterior parts are created by the septal cartilage and also vomer bone respectively.

The floor the the sleep cavity is created by the difficult palate, separating it from the oral cavity. The hard palate consists of the palatine bone posteriorly, and the palatine procedure of the maxilla anteriorly. The cribriform plate of the ethmoid bone develops the roof that the sleep cavity.


by TeachMeSeries Ltd (2021)
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number 2 – Lateral see of the next of the nasal septum.

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Clinical Relevance: nasal Fracture

Due come the prominence that the external nasal skeleton, sleep fractures are typical – the most common facial fracture. Fractures usually happen as a result of blunt trauma to the nose. A usual sequela of sleep fractures is permanent deformity, because of disruption that the bone and also cartilage.