mandible biology definition
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- Mandible. The jaw bone. The lower Jawbone in vertebrates; it is hinged to open the mouth.The 'jaw' of vertebrates responsible for crunching down food materials into a swallow-able form. Please contribute to this project, if you have more information about this term feel free to edit this page.he lower Jawbone in vertebrates; it is hinged to open the mouth.The 'jaw' of vertebrates responsible for crunching down food materials into a swallow-able form. Please contribute to this project, if you have more information about this term feel free to edit this page.
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Hyoid bone The hyoid bone (lingual bone) (/ˈhaɪɔɪd/ ; Latin os hyoideum) is a horseshoe-shaped bone situated in the anterior midline of the neck between the chin and the thyroid cartilage.At rest, it lies at the level of the base of the mandible in the front and the third cervical vertebra (C3) behind.Unlike other bones, the hyoid is only distantly articulated to other bones by muscles or ligaments.The hyoid is anchored by muscles from the anterior, posterior and inferior directions, and aids in tongue movement and swallowing.t rest, it lies at the level of the base of the mandible in the front and the third cervical vertebra (C3) behind. Unlike other bones, the hyoid is only distantly articulated to other bones by muscles or ligaments.
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- Due to the minimal amount of soft tissue that covers the mandible, it is common for these fractures to be open. An open fracture is a fracture that has resulted in loss of integrity of the protective layer of soft tissue around the bone, exposing the disrupted bone edges to the external environment (Figure 2).
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Mandible (insect mouthpart) All but a few adult Lepidoptera lack mandibles, with the remaining mouthparts forming an elongated sucking tube. The exception is the mandibulate moths (family Micropterigidae), which have fully developed mandibles as adults.ll but a few adult Lepidoptera lack mandibles, with the remaining mouthparts forming an elongated sucking tube. The exception is the mandibulate moths (family Micropterigidae), which have fully developed mandibles as adults.
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- The primary bones of the face are the mandible, maxilla, frontal bone, nasal bones, and zygoma. Facial bone anatomy is complex, yet elegant, in its suitability to serve a multitude of functions.he mandible is a U-shaped bone. It is the only mobile bone of the facial skeleton, and, since it houses the lower teeth, its motion is essential for mastication. It is formed by intramembranous ossification. The mandible is composed of 2 hemimandibles joined at the midline by a vertical symphysis.
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Cholesterol Levels in Women Over 50 The important thing to be aware of is whether or not you are at risk for high cholesterol based on weight, eating habits, lifestyle and of course, family history. Cholesterol levels in women over 50 are best determined by your doctor or health care professional.
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Causes of Burning pain Drug side effect causes of Burning pain. The following drugs, medications, substances or toxins may possibly cause Burning pain as a side effect. [ See detailed list of 2 drug side effect causes of Burning pain 1  ]. Alitretinoin. 2  Panretin.
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Maxilla The maxilla (plural: maxillae /mækˈsɪliː/) in animals is the upper jawbone formed from the fusion of two maxillary bones. The upper jaw includes the frontal portion of the palate of the mouth. The two maxillary bones are fused at the intermaxillary suture. This is similar to the mandible (lower jaw), which is also a fusion of two mandibular bones at the mandibular symphysis.
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- The mandible (from Latin mandibula, jawbone) or inferior maxillary bone is the largest, strongest and lowest bone in the face.he mandible (from Latin mandibula, jawbone) or inferior maxillary bone is the largest, strongest and lowest bone in the face.
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tooth [to̳th] (pl. teeth) one of the small bonelike structures of the jaws for biting and mastication of food; they also help in the shaping of sounds and forming of words in speech. Structure. The portion of a tooth that rises above the gum is the crown; the portion below is the root. The crown is covered by enamel, which is related to the epithelial tissue of the skin and is the hardest substance in the human body. The surface of the root is composed of a bonelike tissue called cementum.
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Mandible It forms the lower jaw and holds the lower teeth in place. In the midline on the anterior surface of the mandible is a faint ridge, an indication of the mandibular symphysis, where the bone is formed by the fusion of right and left processes during mandibular development.n the midline on the anterior surface of the mandible is a faint ridge, an indication of the mandibular symphysis, where the bone is formed by the fusion of right and left processes during mandibular development.
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Mandible It forms the lower jaw and holds the lower teeth in place. The mandible sits beneath the maxilla. The bone is formed from a fusion of left and right processes, and the point where these sides join, the mandibular symphysis, is still visible as a faint ridge in the midline.
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- A proboscis / p r oʊ ˈ b ɒ s ɪ s / is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elongated nose or snout.
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Comparing a Human and Avian Skeleton The upper jaw of the human, and the upper beak of the bird is composed of a bone called the maxilla. The lower jaw, and lower beak is composed of a bone called the mandible. On both skeletons, color the cranium (A) red, the maxilla (B) grey, and the mandible (C) pink.
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- /pro·tu·ber·ance/ (-too´ber-ans) a projecting part, or prominence. mental protuberance a triangular prominence on the anterior surface of the body of the mandible, on or near the median line.
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clavicle n. 1  1. Either of two slender bones in humans that extend from the manubrium of the sternum to the acromion of the scapula. 2  2. One of the bones of the pectoral girdle in many vertebrates.
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Mandible The mandible, or lower jaw, is the bone that forms the lower part of the skull, and along with the maxilla (upper jaw), forms the mouth structure.Movement of the lower jaw opens and closes the mouth and also allows for the chewing of food. The lower set of teeth in the mouth is rooted in the lower jaw.he mandible, or lower jaw, is the bone that forms the lower part of the skull, and along with the maxilla (upper jaw), forms the mouth structure.
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- Mandible fractures are a frequent injury because of the mandible's prominence and relative lack of support. As with any facial fracture, consideration must be given for the need of emergency treatment to secure the airway or to obtain hemostasis if necessary before initiating definitive treatment of the fracture.
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- Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Mandible and Its Markings The mandible (lower jawbone) is the largest, strongest bone of the face Its major markings include the coronoid process, mandibular condyle, the alveolar margin, and the mandibular and mental foramina.
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- The mandible, or jawbone, is the only movable bone in the skull. It is the strongest and most massive bone in the face. The mandible plays a vital role in many common tasks, including chewing, speech, and facial expression. Anatomy.
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record n 1. a record of the natural chewing movement of the mandible made on an occlusion rim by teeth or scribing studs. n 2. a record of the movements of the mandible made on the occluding surface of the opposing occlusion rim by teeth or scribing studs and produced by simulated chewing movements. record, interocclusal,
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teeth Any of the hard bony structures in the mouth used to grasp and chew food and as weapons of attack and defense. In mammals and many other vertebrates, the teeth are set in sockets in the jaw. In fish and amphibians, they grow in and around the palate. See also dentition.
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- H). Mandible Only movable bone in the skull i. ramus of the mandible ii. mandibular angle iii. mandibular condyle articulates with the mandibular fossae iv. It is separated from the coronoid process by the-- v. mandibular notch vi.
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Mandible In lobe-finned fishes and the early fossil tetrapods, the bone homologous to the mandible of mammals is merely the largest of several bones in the lower jaw. In such animals, it is referred to as the dentary bone, and forms the body of the outer surface of the jaw. It is bordered below by a number of splenial bones, while the angle of the jaw is formed by a lower angular bone and a suprangular bone just above it.
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- mandibular fossa - a deep concavity in the temporal bone at the root of the zygomatic arch that receives the condyle of the mandible. glenoid fossa. os temporale, temporal bone - a thick bone forming the side of the human cranium and encasing the inner ear.
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- What Is the Mandibular Ramus? The mandible is the lower part of the jaw, which moves like a hinge thanks to a network of muscles. The mandibular ramus serves as the bridge attaching the jaw to the temporal bone of the skull via the temporomandibular (TMJ) joint.