病理.txt（Pathology. TXT）.doc

病理.txt（Pathology. TXT） 1. The concept, type and the occurrence mechanism and morphological characteristics of glass sample change. A: glass-like change is also known as transparent degeneration, which refers to the appearance of homogenous, red-dyed, unstructured translucent glass-like substances in cells, connective tissue and wall of blood vessels. Change (1) blood vessel walls of glass samples, the hardening of the arteries, is common in hypertension in kidney, brain, spleen and retinal arteriole is mainly due to the arteriole increased membrane permeability, plasma protein infiltration lining, solidification under the endothelial cells into a uniform red dye material without structure. The arterial wall thickens and stiffens, the tube cavity becomes narrow, even occlusive. (2) glass-like change of connective tissue is a manifestation of the aging of collagen fibers, which can be seen in the biological reason (scar) of fibrous connective tissue (scar) and pathologic increase (machine, fibrosis, etc.). (3) intracellular glass-like change is the formation of homogenous, red-dyed, near-round bodies of abnormal proteins accumulated in cells, such as Mallory bodies in hepatocytes in the case of alcohol poisoning. What are the main morphological markers of cell necrosis? A: the changes of the nucleus, morphological expression, pyknosis, dysplais, decreased nuclear volume. Karyorrhexis, the chromatin calving into small fragments, the chromatin fragments scattered in the cytoplasm; Karyolysis, in which the DNA of chromatin is broken down by the enzyme, can only be seen and even not seen in the outline of the nucleus. 3 what is the machine? Which situations can be machine-made? Answer: the necrotic tissue can not be fully dissolved or isolated, and it is formed by the surrounding tissue of new capillaries and fibroblasts, which will form and replace the necrotic tissue. The process of replacing necrotic tissues (or other foreign bodies such as blood clots) by the new gran