|
Major Palatine Foramina
The greater palatine foramen is, along with the lesser palatine foramen, one of two foramina (holes) in each of the left and right palatine bones which form the posterior roof of the human mouth, known as the palate. It is sometimes known as the major palatine foramen. The greater palatine foramen functions primarily for the transmission of the descending palatine vessels and greater palatine nerve; running anteriorly (forward) and medially (towards the center-line) from it is a groove, for the same vessels and nerve. Anatomy The greater palatine foramen is slightly larger than the lesser, and is positioned more anteriorly and laterally on the palatine bone, nearly bordering the maxilla. Variations The greater palatine foramen (GPF) is related to the upper 3rd molar tooth in most of the skulls (55%), 2nd molar in (12%), between the 2nd and 3rd molar in (19%) and retromolar in (14%). The shape of the foramen is elongated antero-posteriorly; however, an unusually crescent sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lesser Palatine Foramen
The lesser palatine foramina are a pair of foramina (openings) on each of the palatine bones, which form the posterior roof of the human mouth. They are sometimes referred to as the minor palatine foramina. The lesser palatine foramina form a passage through the bone for the lesser palatine nerves and the lesser palatine arteries so that they may reach the soft palate from above. They are positioned posterior to the greater palatine foramen The greater palatine foramen is, along with the lesser palatine foramen, one of two foramina (holes) in each of the left and right palatine bones which form the posterior roof of the human mouth, known as the palate. It is sometimes known as the ..., in the pyramidal process of the palatine bone. References External links * Bones of the head and neck {{musculoskeletal-stub Palate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palatine Bone
In anatomy, the palatine bones (; derived from the Latin ''palatum'') are two irregular bones of the facial skeleton in many animal species, located above the uvula in the throat. Together with the maxilla, they comprise the hard palate. Structure The palatine bones are situated at the back of the nasal cavity between the maxilla and the pterygoid process of the sphenoid bone. They contribute to the walls of three cavities: the floor and lateral walls of the nasal cavity, the roof of the mouth, and the floor of the orbits. They help to form the pterygopalatine and pterygoid fossae, and the inferior orbital fissures. Each palatine bone somewhat resembles the letter L, and consists of a horizontal plate, a perpendicular plate, and three projecting processes—the pyramidal process, which is directed backward and lateral from the junction of the two parts, and the orbital and sphenoidal processes, which surmount the vertical part, and are separated by a deep notch, the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palate
The palate () is the roof of the mouth in humans and other mammals. It separates the oral cavity from the nasal cavity. A similar structure is found in crocodilians, but in most other tetrapods, the oral and nasal cavities are not truly separated. The palate is divided into two parts, the anterior, bony hard palate and the posterior, fleshy soft palate (or velum). Structure Innervation The maxillary nerve branch of the trigeminal nerve supplies sensory innervation to the palate. Development The hard palate forms before birth. Variation If the fusion is incomplete, a cleft palate results. Function in humans When functioning in conjunction with other parts of the mouth, the palate produces certain sounds, particularly velar, palatal, palatalized, postalveolar, alveolopalatal, and uvular consonants. History Etymology The English synonyms palate and palatum, and also the related adjective palatine (as in palatine bone), are all from the Latin ''palatum' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Descending Palatine Vessels
The descending palatine artery is a branch of the third part of the maxillary artery supplying the hard and soft palate. Course It descends through the greater palatine canal with the greater and lesser palatine branches of the pterygopalatine ganglion, and, emerging from the greater palatine foramen, runs forward in a groove on the medial side of the alveolar border of the hard palate to the incisive canal; the terminal branch of the artery passes upward through this canal to anastomose with the sphenopalatine artery. Branches Branches are distributed to the gums, the palatine glands, and the mucous membrane of the roof of the mouth; while in the pterygopalatine canal it gives off twigs which descend in the lesser palatine canals to supply the soft palate and palatine tonsil, anastomosing with the ascending palatine artery. According to Terminologia Anatomica, the descending palatine artery branches into the greater palatine artery and lesser palatine arteries. See also * As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Palatine Nerve
The greater palatine nerve is a branch of the pterygopalatine ganglion. This nerve is also referred to as the anterior palatine nerve, due to its location anterior to the lesser palatine nerve. It carries both general sensory fibres from the maxillary nerve, and parasympathetic fibers from the nerve of the pterygoid canal. It may be anaesthetised for procedures of the mouth and maxillary (upper) teeth. Structure The greater palatine nerve is a branch of the pterygopalatine ganglion. It descends through the greater palatine canal, moving anteriorly and inferiorly. Here, it is accompanied by the descending palatine artery. It emerges upon the hard palate through the greater palatine foramen. It then passes forward in a groove in the hard palate, nearly as far as the incisor teeth. While in the pterygopalatine canal, it gives off lateral posterior inferior nasal branches, which enter the nasal cavity through openings in the palatine bone, and ramify over the inferior nasal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxilla
In vertebrates, the maxilla (: maxillae ) is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The two maxillary bones are fused at the intermaxillary suture, forming the anterior nasal spine. This is similar to the mandible (lower jaw), which is also a fusion of two mandibular bones at the mandibular symphysis. The mandible is the movable part of the jaw. Anatomy Structure The maxilla is a paired bone - the two maxillae unite with each other at the intermaxillary suture. The maxilla consists of: * The body of the maxilla: pyramid-shaped; has an orbital, a nasal, an infratemporal, and a facial surface; contains the maxillary sinus. * Four processes: ** the zygomatic process ** the frontal process ** the alveolar process ** the palatine process It has three surfaces: * the anterior, posterior, medial Features of the maxilla include: * t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Palatine Foramen
The greater palatine foramen is, along with the lesser palatine foramen, one of two foramina (holes) in each of the left and right palatine bones which form the posterior roof of the human mouth, known as the palate. It is sometimes known as the major palatine foramen. The greater palatine foramen functions primarily for the transmission of the descending palatine vessels and greater palatine nerve; running anteriorly (forward) and medially (towards the center-line) from it is a groove, for the same vessels and nerve. Anatomy The greater palatine foramen is slightly larger than the lesser, and is positioned more anteriorly and laterally on the palatine bone, nearly bordering the maxilla. Variations The greater palatine foramen (GPF) is related to the upper 3rd molar tooth in most of the skulls (55%), 2nd molar in (12%), between the 2nd and 3rd molar in (19%) and retromolar in (14%). The shape of the foramen is elongated antero-posteriorly; however, an unusually crescent sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Palatine Canal
The greater palatine canal (or pterygopalatine canal) is a passage in the skull that transmits the descending palatine artery, vein, and greater and lesser palatine nerves between the pterygopalatine fossa and the oral cavity. Structure The greater palatine canal starts on the inferior aspect of the pterygopalatine fossa. It goes through the maxilla and palatine bones to reach the palate, ending at the greater palatine foramen. From this canal, accessory canals branch off; these are known as the lesser palatine canals. The canal is formed by a vertical groove on the posterior part of the maxillary surface of the palatine bone; it is converted into a canal by articulation with the maxilla. The canal transmits the descending palatine vessels, the greater palatine nerve, and the lesser palatine nerve. See also * Greater palatine foramen * Pterygopalatine fossa In human anatomy, the pterygopalatine fossa (sphenopalatine fossa) is a fossa in the skull. A human skull conta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lesser Palatine Foramina
The lesser palatine foramina are a pair of foramina (openings) on each of the palatine bones, which form the posterior roof of the human mouth. They are sometimes referred to as the minor palatine foramina. The lesser palatine foramina form a passage through the bone for the lesser palatine nerves and the lesser palatine arteries so that they may reach the soft palate from above. They are positioned posterior to the greater palatine foramen The greater palatine foramen is, along with the lesser palatine foramen, one of two foramina (holes) in each of the left and right palatine bones which form the posterior roof of the human mouth, known as the palate. It is sometimes known as the ..., in the pyramidal process of the palatine bone. References External links * Bones of the head and neck {{musculoskeletal-stub Palate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bones Of The Head And Neck
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility. Bones come in a variety of shapes and sizes and have complex internal and external structures. They are lightweight yet strong and hard and serve multiple functions. Bone tissue (osseous tissue), which is also called bone in the uncountable sense of that word, is hard tissue, a type of specialised connective tissue. It has a honeycomb-like matrix internally, which helps to give the bone rigidity. Bone tissue is made up of different types of bone cells. Osteoblasts and osteocytes are involved in the formation and mineralisation of bone; osteoclasts are involved in the resorption of bone tissue. Modified (flattened) osteoblasts become the lining cells that form a protective layer on the bone surface. The minerali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
