口腔组织病理学名词解释（An explanation of the terms of oral
histopathology）
1. ecto menchymal: the head and face most of the connective tissue from neural crest cells, neural crest cells becau they originate from the ectoderm, so the connective tissue called ecto menchymal tissues or menchymal.平凡之路歌曲歌词
2. branchial arch: when the embryo is fourth weeks old, the primary pharyngeal menchymal cells proliferate rapidly, forming a symmetrical 6 dorsal column with a symmetrical dorsal horn, which corresponds to the 6 pairs of the aortic arch arteries, called the branchial arch.
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3.: a shallow trench between the pharyngeal branchial arch on the surface adjacent to the side that branchial, medial and branchial arch corresponding to the original surface of the pharynx, lined by endoderm epithelium with cystic hyperplasia of the laterally, forming a shallow trench should be opposite branchial groove, called pharyngeal pouch.
4. concave: in the no, the maxillary process and the mandibular process of the central formation of depression, known as the mouth of the mouth or mouth, that is, the original oral cavity.
5.: oropharyngealmembrane stomodeal deep and connected with a film that foregut, oropharyngealmembrane apart between the two, this film from the prochordal plate early embryo, consisting of two layers inside and outside. At the end of the fourth week of the embryo, the oropharynx membrane ruptures.
6. fusion: in the process of facial development, the facial ectoderm and the process of growth occur in the process of surface ectoderm contact, rupture, degradation and disappearance, which is called the fusion of facial process.
7. joint: the process of facial protuberance will become shallow and disappear with the growth of facial process. This process is called facial protrusion.
8., the original palate: under the olfactory pit, the bulbous protrusion is constantly proliferating to the oral side during the process of combining with the contralateral bulbous protrusion and the maxillary process. The protrusion is called the palatal protrusion. The anterior palatine process will form the maxillary and maxillary incisors.
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9. nodules: at fourth weeks of embryo, the inner menchyme of the mandible is constantly proliferating, forming 3 bulging process. The two symmetrical eminence on both sides of the tongu
e is larger, called the lateral lingual eminence, and it is a small protuberance at the midline of the lateral lingual eminence, called the singular nodule. After the nodules are covered by the lateral lingual protuberance, only a small part of the anterior tongue of the foramen is formed, or it degenerates and disappears without forming any structure.
10.Meckel cartilage: also called first branchial arch cartilage or mandibular cartilage. Bar cartilage bars in the left and right first branchial arches, respectively. During development, the posterior end of the mandibular cartilage
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expands to form a hammer cartilage; the anterior part of the mandibular cartilage also forms the anterior and lower jaw ligaments, and the rest of the cartilage disappears.
1. primary belt: embryonic fifth weeks, in the alveolar area in the future, deep ecto menchymal tissue induced epithelial hyperplasia, started only at specific points on the mandibular arch on local epithelial hyperplasia, epithelial thickening quickly connect to each other in accordance with the shape of a horshoe shaped jaw formed on the belt. Known as the primary belt.
2. plates: in the venth week of the embryo, the primary upper belt continues to grow deep and divides into two: the epithelial plate that grows toward the buccal (LIP) direction is called the vestibul
关于读书的名言ar plate, and the epithelial plate on the lingual (palatal) side is called the dental plate.
3. epithelial ptum: the epithelial root sheath continues to grow, leaving the crown about 450 degrees toward the pulp direction, forming a disk like structure. This part of the epithelium is called the epithelial ptum. The epithelial ptum is surrounded by an open pore to the pulp, which is the apical foramen of the future.
4. epithelial root sheath: root starts to occur, the inner enamel and outer enamel epithelium hyperplasia in the cervical loop, growth to apical direction, and reticular layer and the middle layer cells do not appear in the hyperplastic epithelium. The hyperplastic epithelia form a double layer called the epithelial root sheath.
5. neck ring: the inner enamel epithelium is connected with the outer enamel epithelium and is called the cervical ring. It plays an important role in the formation of the epithelial root sheath.
6. enamel junction: in the middle of the tooth germ, the local thickening of the inner enamel epithelium and the enamel knot play an important role in the morphogenesis of the teeth, and may be the signal center for regulating cell differentiation and tooth morphogenesis.
7. reduced enamel epithelium: enamel after ameloblasts, middle layer cells and stellate reticulum and the outer enamel epithelium, forming a layer of squamous epithelium covering the enamel cuticle, called the reduced enamel epithelium (reduced dental epithelium). When the teeth erupt into the mouth, the reduced enamel epithelium forms the junctional epithelium of the gum at the neck of the tooth.
8. guide tube: when the tooth germ meets the direction of the joint, the tooth capsule surrounding the tooth germ is connected with the lamina propria of the oral mucosa through connective tissue cord. This structure is called the guide cord. In the dry skull of the baby, the pores of the connective tissue line are visible on the lingual side of the primary teeth, referred to as the "guide tube". When the permanent teeth erupt, the bone absorption soon leads to the widening of the guide tube and becomes the bone channel for the eruption of teeth.
1. inter ball dentin: the dentin is mainly spherical and椒盐猪蹄怎么做法
calcified and consists of many calcium globules. In the abnce of dentin calcification, the calcified globules leave a number of calcified stroma known as inter - dentin, where the dentin tubules are pasd, but there is no periodontal dentin structure. The inter - dentin is mainly en near the crown of tooth and the dentin border,
The distribution of teeth along the growth line, size, irregular shape, and its edge is concave, much like the gap between many spheres.
上英语课的英文闲章内容2. propha dentin: there is always a layer of mineralized dentin between the odontoblast and mineralized dentin, called pre dentin. The initial dentin is generally 10~12 m thick. The teeth of the developing teeth become slower than tho of the developing teeth, so the anterior dentin of the former is thinner than the latter. The boundary between the early dentin and mineralized dentin is clear, irregular shape shows calcified globules.
3. reparative dentin: also referred to as third - pha dentin or reactive dentin. When the enamel surface is damaged by wear, acid etching and caries, the deep dentin is expod, and the dentin cells are stimulated by varying degrees, and some of them are denatured. Pulp deep undifferentiated cells can be moved to the place and the degeneration of cells to differentiate into odontoblasts, and odontoblasts and still function together with the cretion of dentin matrix, and mineralization, called reparative dentin.
4. condary dentin: the development of the tooth root, the
