Agger nasi

Lateral wall of nasal cavity; the three nasal conchæ have been removed.

Details
Identifiers
Latin| agger nasi
TA98| A06.1.02.021
TA2| 3145
FMA| 59766
Anatomical terms of bone

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The agger nasi (from Latin: agger meaning "mound or heap") is a small ridge on the lateral side of the nasal cavity. It is located midway at the anterior edge of the middle nasal concha, directly above the atrium of the middle meatus. It is formed by a mucous membrane that is covering the ethmoidal crest of the maxilla.

It is also called the nasoturbinal concha and the nasal ridge. In 90% of patients an anterior ethmoidal cell (called the "agger nasi cell") can be found in the lacrimal bone below the agger nasi ridge.[1] An enlarged agger nasi cell may encroach the frontal recess area, constricting it and causing mechanical obstruction to frontal sinus drainage. The agger nasi cell may be removed during sinus surgery to open an obstructed frontal sinus drainage pathway.

## References

[edit]

1. ^ Gaillard, Frank. "Agger nasi cells | Radiology Reference Article". Radiopaedia.org. Retrieved 25 April 2022.

## Bibliography

[edit]

* "Agger nasi", Stedman's Medical Dictionary, 27th ed. (2000). ISBN 0-683-40007-X

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The facial skeleton of the skull

Maxilla|

| Surfaces|

* Anterior: fossae (Incisive fossa, Canine fossa)
* Infraorbital foramen
* Orbital bones
* Anterior nasal spine

* Infratemporal: Alveolar canals
* Maxillary tuberosity

* Orbital: Infraorbital groove
* Infraorbital canal

* Nasal: Greater palatine canal

|

Processes|

* Zygomatic process
* Frontal process (Agger nasi, Anterior lacrimal crest)
* Alveolar process
* Palatine process (Incisive foramen, Incisive canals, Foramina of Scarpa, Incisive bone, Anterior nasal spine)

Other|

* Body of maxilla
* Maxillary sinus

Zygomatic|

* Orbital process (Zygomatico-orbital)
* Temporal process (Zygomaticotemporal)
* Lateral process (Zygomaticofacial)

Palatine|

| Fossae|

* Pterygopalatine fossa
* Pterygoid fossa

|

Plates|

* Horizontal plate (Posterior nasal spine)
* Perpendicular plate (Greater palatine canal, Sphenopalatine foramen)
* Hard palate

Processes|

* Pyramidal
* Orbital
* Sphenoidal

Mandible|

| Body|

* external surface (Chin, Jaw, Mandibular prominence, Mandibular symphysis, Lingual foramen, Mental protuberance, Mental foramen, Mandibular incisive canal)
* internal surface (Mental spine, Mylohyoid line, Sublingual fovea, Submandibular fovea)
* Alveolar part

|

Ramus|

* Mylohyoid groove
* Mandibular canal
* Lingula
* Mandibular foramen
* Angle
* Coronoid process
* Mandibular notch
* Condyloid process
* Pterygoid fovea

Nose|

* Nasal bone
* Internasal suture
* Nasal foramina
* Inferior nasal concha
* Ethmoidal process
* Maxillary process
* Vomer
* Wing

Other|

* Lacrimal
* Posterior lacrimal crest
* Lacrimal groove
* Lacrimal hamulus
* Prognathism
* Retromolar space

* v
* t
* e

Anatomy of the human nose

External nose|

* Ala of nose
* nasal cartilages
* Septal nasal
* Lateral nasal
* Major alar
* Minor alar
* Vomeronasal

Nasal cavity|

| Openings|

* Nasal vestibule
* Nostril
* Choana

|

Lateral wall|

* Nasal conchae: Supreme nasal concha
* Superior nasal concha
* Middle nasal concha
* Inferior nasal concha

* Nasal meatus: (Supreme
* superior
* middle
* inferior)

* Sphenoethmoidal recess
* Ethmoid bulla
* Agger nasi
* Ethmoidal infundibulum
* Semilunar hiatus
* Maxillary hiatus

Medial wall|

* Nasal septum
* Vomeronasal organ

Nasal mucosa|

* Olfactory mucosa

Paranasal sinuses|

* Maxillary sinus
* Sphenoidal sinuses
* Frontal sinus
* Ethmoid sinus

Naso-pharynx|

* Pharyngeal opening of auditory tube
* Salpingopharyngeal fold
* Salpingopalatine fold
* Torus tubarius
* Pharyngeal tonsil
* Pharyngeal recess

Authority control databases |

* Terminologia Anatomica

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