maxilla

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maxilla

 [mak-sil´ah] (L.)
one of two identical bones that form the upper jaw. The maxillae meet in the midline of the face and often are considered as one bone. They have been described as the architectural key of the face because all bones of the face except the mandible touch them. Together the maxillae form the floor of the orbit for each eye, the sides and lower walls of the nasal cavities, and the hard palate. The lower border of the maxilla supports the upper teeth. Each maxilla contains an air space called the maxillary sinus.
Maxilla.

max·il·la

, gen. and pl.

max·il·lae

(mak-sil'ă, mak-sil'ē), [TA]
An irregularly shaped pneumatized bone, supporting the superior teeth and taking part in the formation of the orbit, hard palate, and nasal cavity and containing the maxillary sinus.
[L. jawbone]

maxilla

/max·il·la/ (mak-sil´ah) pl. maxil´las, maxil´lae   [L.] the irregularly shaped bone that with its fellow forms the upper jaw. max´illary

maxilla

(măk-sĭl′ə)
n. pl. maxillae (măk-sĭl′ē) or maxillas
1. Anatomy Either of a pair of bones of the human skull fusing in the midline and forming the upper jaw.
2. A homologous bone of the skull in other vertebrates.
3. Either of two laterally moving appendages situated behind the mandibles in insects and most other arthropods.

maxilla

[maksil′ə] pl. maxillae
Etymology: L, mala, jaw
one of a pair of large bones (often referred to as one bone) that form the upper jaw and teeth, consisting of a pyramidal body and four processes: the zygomatic, frontal, alveolar, and palatine.
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Maxilla

maxilla

Either of a pair of irregular bones constituting the upper jaw, which house the upper teeth and form part of the orbit, nasal cavity and palate.

max·il·la

, pl. maxillae (mak-silă, -ē) [TA]
An irregularly shaped bone, supporting the superior teeth and taking part in the formation of the orbit, hard palate, and nasal cavity.
[L. jawbone]

maxilla

One of a pair of joined facial bones that form the upper jaw, the hard palate, part of the wall of the cavity of the nose and part of the floor of each eye socket. The maxillae bear the upper teeth and each contains a cavity called the maxillary antrum or sinus.

maxilla

  1. (in vertebrates) one of a pair of joined bones forming the upper jaw, carrying all teeth except the incisors. The term is loosely used to denote the whole of the upper jaw.
  2. (in arthropods) that part of the mouthparts lying behind the jaws. See LABRUM and LABIUM.

Maxilla

The bone of the upper jaw which serves as a foundation of the face and supports the orbits.
Mentioned in: Maxillofacial Trauma

maxilla (mak·silˑ·),

n the upper jaw bone. It encloses the maxillary sinus and other cavities and projections.
Enlarge picture
Maxilla.

max·il·la

, pl. maxillae (mak-silă, -ē) [TA]
Irregularly shaped pneumatized bone, supporting superior teeth and taking part in formation of orbit, hard palate, and nasal cavity.
[L. jawbone]

maxilla (maksil´ə),

n the irregularly shaped bone forming half of the upper jaw or maxillary arch. It is composed of the two maxillae.
Enlarge picture
The maxilla.
maxilla, frontal process of,
n a projection of the maxilla that articulates with the nasal and frontal bones to form the nasal cavity.

maxilla

pl. maxillae, maxillas [L.] one of two identical bones that form the upper jaw. The maxillae meet in the midline of the face and often are considered as one bone. Together the maxillae form the floor of the orbit for each eye, the sides and lower walls of the nasal cavities, and the hard palate. The lower border of the maxilla supports the upper teeth. In most species, each maxilla contains an air space called the maxillary sinus.
References in periodicals archive ?
These portions of the palatoquadrate and Meckel's cartilage are called the quadrate in the upper jaw and the articular in the lower jaw.
The upper jaw extends posteriorly to below the anterior half of the pupil compared to the anterior edge of the eye in C.
The team at Vall d'Hebron hospital, in Barcelona, spent two years planning the transplant - of complete facial skin and muscles, eyelids, nose, lips, upper jaw, all the teeth, the palate , cheekbones and lower jaw.
Three new species of Indo-Pacific jawfishes (Opistognathus: Opistognathidae), with the posterior end of the upper jaw produced as a thin flexible lamina.
Most of the teeth in each side of the creature's upper jaw have grooves that run from the base of each tooth to the tip, a characteristic seen in some of today's venomous reptiles.
The Cat G 130B uses a two-over-three tine configuration that allows the three tines on the slightly curved lower jaw to sink easily into scrap piles, while a pair of tines on the interlocking upper jaw exerts ample hydraulic power to retain material securely on the large working surfaces of the jaws.
In normal horses, the lower jaw is narrower than the upper jaw.
For the information of those who think it is perfectly acceptable to will horses to fall, Dempsey had to have two plates inserted in his bottom jaw and six in his upper jaw.
He found out after the game he had a fractured bone in his upper jaw, between his mouth and nose.
5 million-year-old upper jaw of the human ancestor Homo erectus.
Rak and his coworkers base their conclusion on the size and shape of a horizontal bone that connects the lower jaw to the upper jaw.

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