痰是从人体哪里来的呢?首先让我们从呼吸道谈起:由鼻孔到支气管的终末分支,中间都是呼吸道。它被喉部的声门分为上下两部分:声门以上包括鼻腔、咽部称为上呼吸道,具有温暖空气的作用;声门以下是由喉、气管、支气管以及它的逐次分支所共同组成的管腔系统,称为下呼吸道。从两侧支气管到连接肺泡的最小分支——呼吸细支气管,其数目为几十万之多。在这些管腔内表面的粘膜上。分布着无数分泌腺和纤毛上皮细胞,越往细小分支,腺体和纤毛就越少,直到消失。腺体分泌浆液和粘液,浆液具有湿润空 Phlegm comes from the body where? First of all, let’s talk from the respiratory tract: from the nostril to the terminal branch of the bronchus, the middle is the respiratory tract. It is divided into upper and lower parts of the larynx glottis: nasal cavity above the glottis, pharynx known as the upper respiratory tract, with warm air; below the glottis by the larynx, trachea, bronchial and its successive branch of the common The luminal system, known as the lower respiratory tract. From the bronchus on both sides to the smallest branch that connects the alveoli - respiratory bronchioles, the number is as many as hundreds of thousands. On the mucosa of the inner surface of these lumens. Distribution of numerous secretory glands and ciliated epithelial cells, the more the small branches, the less the glands and cilia, until disappear. Glands secrete slurry and mucus, the slurry has moist empty