Greater alar cartilage
Encyclopedia
The 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 naris 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 septum mobile nasi.
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 naris, 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.
Lateral nasal cartilage
The lateral cartilage is situated below the inferior margin of the nasal bone, and is flattened, and triangular in shape....
, and bent upon itself in such a manner as to form the medial wall
Medial wall
Medial wall can refer to:* Nasal septum* Labyrinthine wall of tympanic cavity...
and lateral wall of the naris of its own side.
The portion which forms the medial wall
Medial wall
Medial wall can refer to:* Nasal septum* Labyrinthine wall of tympanic cavity...
(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 septum mobile nasi.
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
Maxilla
The maxilla is a fusion of two bones along the palatal fissure that form the upper jaw. This is similar to the mandible , which is also a fusion of two halves at the mental symphysis. Sometimes The maxilla (plural: maxillae) is a fusion of two bones along the palatal fissure that form the upper...
by a tough fibrous membrane, in which are found three or four small cartilaginous plates, the lesser alar cartilages
Lesser alar cartilages
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...
(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
Cartilage of the septum
The cartilage of the septum is somewhat quadrilateral in form, thicker at its margins than at its center, and completes the separation between the nasal cavities in front....
; below, it falls short of the margin of the naris, the ala being completed by fatty and fibrous tissue covered by skin
Skin
-Dermis:The dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain. The dermis is tightly connected to the epidermis by a basement membrane. It also harbors many Mechanoreceptors that provide the sense of touch and heat...
.
In front, the greater alar cartilages are separated by a notch which corresponds with the apex of the nose.