mandible

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mandible

 [man´dĭ-b'l]
the horseshoe-shaped bone forming the lower jaw. adj., adj mandib´ular. It consists of a central portion, which forms the chin and supports the lower teeth, and two perpendicular portions, or rami, which point upward from the back of the chin on either side and articulate with the temporal bones.

man·di·ble

(man'di-bŭl), [TA]
A U-shaped bone (in superior view), forming the lower jaw, articulating by its upturned extremities with the temporal bone on either side.

mandible

/man·di·ble/ (man´dĭ-b'l) the horseshoe-shaped bone forming the lower jaw, articulating with the skull at the temporomandibular joint.mandib´ular

mandible

(măn′də-bəl)
n.
1. The lower jaw of a vertebrate animal.
2. Either the upper or lower part of the beak in birds.
3. Any of various mouth organs of invertebrates used for seizing and biting food, especially either of a pair of such organs in insects and other arthropods.

man·dib′u·lar (-dĭb′yə-lər) adj.

mandible

[man′dibəl]
Etymology: L, mandere, to chew
a large U-shaped bone constituting the lower jaw. It contains the lower teeth and consists of a horizontal part, a body, and two perpendicular rami that join the body at almost right angles. The body of the mandible is curved, somewhat resembling a horseshoe, and has two surfaces and two borders. The superior border of the mandible contains sockets for the 16 lower teeth. The inferior border provides a groove for the facial artery. Compare maxilla. mandibular, adj.
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Mandible

mandible

The lower jaw bone. The joint where the mandible meets the upper jaw at the temporal bone is called the temporomandibular joint.

man·di·ble

(man'di-bĕl) [TA]
A U-shaped bone, forming the lower jaw, articulating by its upturned extremities with the temporal bone on either side.
Synonym(s): jaw bone, mandibula, submaxilla.
Enlarge picture
LEFT LATERAL VIEW OF MANDIBLE

mandible

(man′dĭ-bĕl) [L. mandibula, lower jawbone]
The horseshoe-shaped bone forming the lower jaw.
See: illustrationmandibular (-dib′yŭ-lăr), adjective

mandible

The lower jaw bone. The head of the mandible, on either side, articulates with a hollow on the underside of the temporal bone, just in front of the ear. This is called the temporo-mandibular joint. The mandible is pulled upwards by powerful masticatory muscles. In dislocation of the mandible, the heads slip forward out of the hollows in the temporal bone and the mouth remains wide open until the dislocation is reduced by downward pressure on the back teeth.

mandible

that part of the mouthparts of an animal which does most of the crushing of food materials. In vertebrates, the term usually denotes the lower jaw. In insects and other arthropods, the mandibles are one of a pair of mouthparts used for crushing food (see Fig. 197 ).

Mandible

The medical term for the lower jaw. One type of oral appliance used to treat OSA pushes the mandible forward in order to ease breathing during sleep.

man·di·ble

(man'di-bĕl) [TA]
U-shaped bone (in superior view), forming lower jaw, articulating by its upturned extremities with temporal bone on either side.
Synonym(s): jaw bone, lower jaw, mandibulum, submaxilla.

mandible

the horseshoe-shaped bone forming the lower jaw.
Consists of a central body, which forms the chin and supports the lower teeth, and two vertical or perpendicular rami, which point upward from the back of the chin on either side and articulate with the temporal bones by their condylar processes. The rami end as coronoid processes. In ruminants and carnivores the mandible is permanently divided into two halves by the mandibular symphysis, a joint that allows some rotation.
Enlarge picture
Lateral view of the dog mandible. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

swollen mandible
generally enlarged due to osteodystrophia in horses and pigs; localized enlargement in actinomycosis of jaw in cattle, bone neoplasm.
References in periodicals archive ?
Key clinical point: An oral appliance to advance the lower jaw reduced apneic episodes, snoring, and restless legs symptoms.
Behind the lower jaw crest was a hook-like structure that appears to have been the anchor point for the throat pouch, Kellner said.
The study has also revealed that variation peaked again in the Cretaceous, where ancient crocodiles evolved a great variety of lower jaw shapes, as they adapted to a diverse range of feeding ecologies and terrestrial environments, alongside the dinosaurs.
With sleep apnea, after a period of paused breathing, the body kick-starts itself, and the lower jaw juts forward to reopen the airway--often causing teeth grinding in the process.
An excellent alternative, designed by your dentist, is thin plastic plates worn on the upper and lower teeth that holds the lower jaw forward, maintaining the airway throughout the night.
During surgery, the patient had her entire lower jaw and half her chin removed.
The procedure includes cutting and re-aligning of bones, upper jaw, lower jaw and chin, held in place by screws or plates and screws.
Cleaning and reassembly of the bones revealed the preserved bite marks on the ichthyosaur's lower jaw.
During the surgery the man's complete lower jaw (mandible) and floor of his mouth were removed and part of the lymph nodes located on the right side of his neck and 60 per cent of his lower jaw were placed on the right side of the mouth floor to allow surgeons to reconstruct his entire jaw.
Comparing radiographs from eight men and eight women over their lifetimes, researchers at University of Texas Southwestern Medical Center discovered that the lower jaw continued to grow and widen, changing the shape of the face as the person matures.
Q MY lower teeth are in front of my upper teeth and my lower jaw sticks out.
Prosecuting, Mark Ford said: "He suffered a displaced fracture on the lower jaw which necessitated corrective surgery.