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The lateral crus is the outer portion of the major alar cartilages that associate with the ala of the nose. Major alar and minor alar cartilages, seen from below. Both crus come together to form an oval tip at each nostril. Both sides of the major alar cartilages merge to form a notch at the tip, which is referred to as the apex of the nose.
The major alar cartilage (greater alar cartilage) (lower lateral cartilage) is a thin, flexible plate, situated immediately below the lateral nasal cartilage, and bent upon itself in such a manner as to form the medial wall and lateral wall of the nostril of its own side.
In most mammals, the philtrum is a narrow groove that may carry dissolved odorants from the rhinarium or nose pad to the vomeronasal organ via ducts inside the mouth. [4]For humans and most primates, the philtrum survives only as a vestigial medial depression between the nose and upper lip.
Its anterior margin is thicker than the posterior, and is continuous above with the septal nasal cartilage, but separated from it below by a narrow fissure; its superior margin is attached to the nasal bone and the frontal process of the maxilla; its inferior margin is connected by fibrous tissue with the greater alar cartilage. Where the ...
In human anatomy, the part of the nose which forms the lateral wall is curved to correspond with the ala of the nose; it is oval and flattened, narrow behind, where it is connected with the frontal process of the maxilla by a tough fibrous membrane, in which are found three or four small nasal cartilages the minor alar cartilages, also referred to as lesser alar or sesamoid cartilages or ...
Signs and symptoms of a canine space abscess might include swelling that obliterates the nasolabial fold. If left untreated, infections of this space will eventually spontaneously drain via the medial or lateral canthus of the eye, as this is the path of least resistance. [ 2 ]
The septal nasal cartilage (cartilage of the septum or quadrangular cartilage) is composed of hyaline cartilage. [1] It is somewhat quadrilateral in form, thicker at its margins than at its center, and completes the separation between the nasal cavities in front.
At the peaks of the folds of the medial crura, they form the alar domes the tip-defining points of the nose, separated by a notch. [3] They then fold outwards, above and to the side of the nostrils forming the lateral crura. [12] [2] The major alar cartilages are freely moveable and can respond to muscles to either open or constrict the ...
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