Frontal process of maxilla
5170767
106593005
2007-02-08T15:57:15Z
Arcadian
104523
/* Additional images */ added image
{{Infobox Bone |
Name = Frontal process of maxilla |
Latin = processus frontalis maxillae |
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Image = Gray852.png |
Caption = Cartilages of the nose. Side view. (Frontal process of maxilla visible at center.) |
Image2 = Gray154.png |
Caption2 = Articulation of nasal and lacrimal bones with maxilla. (Frontal process visible at top center.) |
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The '''frontal process''' of the [[maxilla]] ('''nasal process''') is a strong [[plate]], which projects upward, medialward, and backward, by the side of the [[nose]], forming part of its lateral boundary.
Its ''lateral surface'' is smooth, continuous with the anterior surface of the body, and gives attachment to the [[Quadratus labii superioris]], the [[Orbicularis oculi]], and the [[medial palpebral ligament]].
Its ''medial surface'' forms part of the lateral wall of the [[nasal cavity]]; at its upper part is a rough, uneven area, which articulates with the ethmoid, closing in the [[anterior ethmoidal cells]]; below this is an oblique ridge, the [[ethmoidal crest]], the posterior end of which articulates with the [[middle nasal concha]], while the anterior part is termed the [[agger nasi]]; the crest forms the upper limit of the atrium of the [[middle meatus]].
The ''upper border'' articulates with the frontal bone and the ''anterior'' with the nasal; the ''posterior border'' is thick, and hollowed into a groove, which is continuous below with the lacrimal groove on the nasal surface of the body: by the articulation of the medial margin of the groove with the anterior border of the lacrimal a corresponding groove on the lacrimal is brought into continuity, and together they form the [[lacrimal fossa]] for the lodgement of the [[lacrimal sac]].
The lateral margin of the groove is named the [[anterior lacrimal crest]], and is continuous below with the orbital margin; at its junction with the orbital surface is a small tubercle, the [[lacrimal tubercle]], which serves as a guide to the position of the [[lacrimal sac]].
==Additional images==
<gallery>
Image:Gray167.png|Articulation of left palatine bone with maxilla.
Image:Gray190.png|The skull from the front.
Image:Gray194.png|Sagittal section of skull.
Image:Gray196.png|Roof, floor, and lateral wall of left nasal cavity.
</gallery>
==External links==
* {{SUNYAnatomyLabs|22|os|19|03}} - "Osteology of the Skull: The Maxilla"
* {{eMedicineDictionary|frontal+process+of+maxilla}}
* {{RocheLexicon|34256.000-1}}
{{Facial bones}}