Major alar cartilage

Major alar cartilage
Cartilages of the nose. Side view. (Major alar cartilage visible in blue at center right.)
Cartilages of the nose, seen from below.
Details
Identifiers
Latin	cartilago alaris major
TA98	A06.1.01.007
TA2	940
FMA	59504
Anatomical terminology [edit on Wikidata]

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.

The portion which forms the medial wall (crus mediale) is loosely connected with the corresponding portion of the opposite cartilage, the two forming, together with the thickened integument and subjacent tissue, the nasal septum.

The part which forms the lateral wall (crus laterale) 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 cartilaginous plates, the lesser alar cartilages (cartilagines alares minores; sesamoid cartilages).

Above, it is connected by fibrous tissue to the lateral cartilage and front part of the cartilage of the septum; below, it falls short of the margin of the nostril, the ala being completed by fatty and fibrous tissue covered by skin.

In front, the greater alar cartilages are separated by a notch which corresponds with the apex of the nose.

References

This article incorporates text in the public domain from page 993 of the 20th edition of Gray's Anatomy (1918)