jaw

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jaw

 [jaw]
either the mandible (lower jaw) or the maxilla (upper jaw), two opposing bony structures of the mouth of a vertebrate; they bear the teeth and are used for seizing prey, for biting, or for masticating food. See anatomic Table of Bones in the Appendices.
cleft jaw a cleft between the median nasal and maxillary processes through the alveolus; see also cleft palate. Called also gnathoschisis.
Hapsburg jaw a mandible that is prognathous, often accompanied by Hapsburg lip. See illustration.
Hapsburg jaw with Hapsburg lip.
phossy jaw phosphonecrosis.

jaw

(jaw),
1. One of the two bony structures in which the teeth are set to form the framework of the mouth.
2. Common name for either the maxillae or the mandible.
[A.S. ceōwan, to chew]

jaw

(jô)
n.
a. Either of two bony or cartilaginous structures that in most vertebrates form the framework of the mouth and hold the teeth.
b. The mandible or maxilla or the part of the face covering these bones.
c. Any of various structures of invertebrates that have an analogous function to vertebrate jaws.

jaw′less adj.

jaw

(jaw)
1. One of the two bony structures, in which the teeth are set, forming the framework of the mouth.
2. Common name for either the maxilla or the mandible.
[A.S. ceōwan, to chew]

jaw

(jo)
Enlarge picture
JAW
1. Either or both of the maxillary and mandibular bones, bearing the teeth and forming the mouth framework. See: illustration
2. The grasping part of a surgical instrument. The word is usually used in the plural.

cleft jaw

An early embryonic malformation resulting in lack of fusion of the right and left mandible into a single bone.

crackling jaw

Noise in the normal or diseased temporomandibular joint during movement of the jaw. Synonym: crepitation

lumpy jaw

Actinomycosis.

jaw

1. The mandible, the U-shaped bone that articulates with the base of the skull high up in front of the ears. In biting and chewing (mastication) the mandible is pulled upwards by powerful muscles running down from the base and temples (temporal bones) of the skull.
2. The MAXILLA, or upper jaw.

jaw

the mandibles of any animal. The term is usually restricted to the bones surrounding the mouth of vertebrates, the (paired) upper jaws being referred to as the maxillae and the lower as the mandible. These bones carry the teeth where present, and are often used for crushing purposes.

jaw

(jaw)
1. One of the two bony structures in which teeth are set to form oral framework.
2. Common name for either maxillae or mandible.
[A.S. ceōwan, to chew]

Patient discussion about jaw

Q. after dinner my daughters jaw swelled up on one side and hurts her, so does her neck on that side. What does this mean? she is 9, no fever or any other ill effects, just the pain

A. weird. swelled up fast? does she have problem breathing? if so- it could be an allergic reaction. if she has problems breathing - GO NOW TO AN ER!!!
if it took a little bit - could be food that got stuck in her gums really hard causing an edema.
if it was slow (over night) could be an abscess in her tooth (a tooth decay that penetrated to the dental pulp).
any way i would go check it out.

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