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正常情况下,一般人的气管、支气管粘膜常分泌少量粘液,起着湿润与保护的作用,很少有痰。当人们的鼻腔、咽喉、气管和肺部发生病变时,就会产生较多的痰液。所以,医学上称痰为“病理性分泌物”。取病人的一滴痰,在显微镜下观察,常可见到很多粘液丝、弹力纤维组织、上皮细胞、灰尘颗粒、白细胞、红细胞及大量病原菌,还有肺呼吸道的病理坏死组织——坏死细胞残骸、脓性分泌物等。一个开放性肺结核病人,1毫升痰中约有结核杆菌10万个。吐痰是人体一种正常的生理反
Under normal circumstances, most people trachea, bronchial mucus often secrete a small amount of mucus, plays a moist and protective effect, little sputum. When people’s nose, throat, trachea and lung lesions occur, it will produce more sputum. Therefore, the medicine called sputum “pathological secretions.” Take a patient’s sputum, observed under a microscope, you can often see a lot of mucus silk, elastic fibers, epithelial cells, dust particles, white blood cells, red blood cells and a large number of pathogens, as well as pathological lung tissue necrosis - necrotic cell debris, pus Sexual secretions and so on. An open tuberculosis patient, 1 ml of sputum about 100000 Mycobacterium tuberculosis. Spitting is a normal physiological reaction of the human body