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作者对收集来的人类颞骨进行了组织学观察,旨在阐明咽鼓管功能障碍与形态学的关系。 1.压力平衡:鼓室和外耳道等压才能提供声音空气传导的最佳功能状态。咽鼓管阻塞将迅即产生10～200mmH_2O的部分真空,如不能立即缓解,将有液体渗出。 2.换气:呼吸性粘膜吸收氧。咽鼓管阻塞将使CO_2分压从正常的17mmHg提高到58mmHg。Moscona和Sadé等已证实高浓度的CO_2可使上皮细胞化生,导致扁平上皮细胞转化成有纤毛的
The authors performed a histological observation of human temporal bones collected to clarify the relationship between eustachian tube dysfunction and morphology. 1. Pressure balance: the tympanic cavity and external auditory canal pressure to provide the best state of the air conduction. Eustachian tube obstruction will immediately produce a partial vacuum of 10 ~ 200mmH_2O, if not immediately alleviate, there will be liquid seepage. 2. Ventilation: Respiratory mucosal absorption of oxygen. Eustachian tube occlusion will increase CO 2 partial pressure from normal 17mmHg to 58mmHg. Moscona and Sadé have confirmed that high concentrations of CO 2 can epithelial metaplasia, resulting in the transformation of flat epithelial cells into cilia