The septal nasal cartilage (cartilage of the septum or quadrangular cartilage) is composed of
hyaline cartilage.
[
] It is somewhat quadrilateral in form, thicker at its margins than at its center, and completes the separation between the
nasal cavities
The nasal cavity is a large, air-filled space above and behind the nose in the middle of the face. The nasal septum divides the cavity into two cavities, also known as fossae. Each cavity is the continuation of one of the two nostrils. The nasal c ...
in front.
Its anterior margin, thickest above, is connected with the
nasal bones, and is continuous with the anterior margins of the
lateral cartilage
The lateral cartilage (upper lateral cartilage, lateral process of septal nasal cartilage) is situated below the inferior margin of the nasal bone, and is flattened, and triangular in shape.
Its anterior margin is thicker than the posterior, and ...
s; below, it is connected to the medial crura of the
major alar cartilage
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 t ...
s by fibrous tissue.
Its posterior margin is connected with the perpendicular plate of the
ethmoid
The ethmoid bone (; from grc, ἡθμός, hēthmós, sieve) is an unpaired bone in the skull that separates the nasal cavity from the brain. It is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a ...
; its inferior margin with the vomer and the
palatine processes of the maxillae.
References
External links
* - "Nasal septum, lateral view"
* - "Diagram of skeleton of medial (septal) nasal wall."
* ()
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Nose