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bony structures of the nose

own nose bones

are a couple bones together in the midline nasal spine supported in the frontal and lateral the or ascending frontal process of maxilla. The side walls of the nose are formed by the bones themselves from the nose and the ascending apophysis of both maxillae.

The nasal bones are quadrangular, thick, hard top, reinforced by frontal nasal spine, thin and wide at the bottom. The ascending apophysis are thick on top and a rear face with the lacrimal the lacrimal groove , and are thinner at the bottom and here are the edges of the pit piriform is lower limit of the lateral nasal wall.

osteo-cartilaginous structures of the nose

cartilaginous structures of the nose

lateral cartilage or triangular or more

are two structures, one pair, attached to the nasal bones from above, ascending apophysis on the sides and the septal cartilage in the midline. Flow at the edges are overlapped by alar cartilages at the level of the internal nasal valve . Diverge in the lower third of septum and form the internal nasal valve .

nasal septum

average structure divides the nasal cavity into two chambers, lateral canals . The septum or septum is formed by the bony septum (perpendicular plate of ethmoid , vomer , nasal crest of maxilla and the nasal crest of palatine bone ), the cartilaginous septum is a square sheet that forms the greater part of the septum in its caudal part. The septal angle is immediately Ariba the alar cartilages in an area called supratip or suprapunta .

The lower part of cartilaginous septum is attached to the vomer and premaxillary wings. Its caudal border is separated from the columella mucocutaneous juxtaposed two layers that form the membranous septum or subseptum .

The cephalic portion septal is attached to the cephalic part of lateral cartilage and extends a few mm under the nasal bones equal distance as do lateral cartilage and is supported by a bony groove Held nasal bones. The dorsal edge septum undergoes a change in its width and configuration to the nasal bones , splits into "Y" forming a groove supraseptal between the branches of the "Y".

The back edge of the septum is attached to the perpendicular plate of ethmoid .

function nasal septum

package supporting the pyramid right nasal and allows nasal physiology are the ventilatory and phonatory olfactory.

lateral cartilage and the bony pyramid

The cephalic part the lateral cartilage ends below the nasal bones themselves above the septum an extension of 8-10 mm, has an oval shape. United by dense connective tissue.

alar cartilage or less

pair structure, which is forming cartilaginous framework of the nasal tip - nose tip -. Each unit has two parts: a " medial crus" and "lateral crus" joined together united in the most prominent Nasal tip called dome or domus, the medial cross curves downwards to form part of the columella , these branches of the medial cross at the bottom end and diverge and there is call it foot wing or foot of the cross medial . Each medial crus is closely attached to the skin of the columella

The lateral portion of the lateral cross is attached to the edge of the piriform aperture through the cartilage accessories.

accessory cartilage or sesamoid

are small, are among the lateral cartilage and alar cartilages .

support cartilage and ligaments

suspensory ligament of the nasal tip : joins the septal angle The distal part of the triangle, in which diverge suprapunta the medial crus and the lateral cross of alar cartilages.

fibrous connections : between bottom and distal lateral cartilage with the upper and distal lateral crus .

Pilar piriform : of cartilage accessories y la the raw side pyriform aperture.