Stenfors L E, Salén B, Winblad B
Acta Otolaryngol. 1979;88(5-6):395-400. doi: 10.3109/00016487909137184.
The role played by the pars flaccida in the functioning of the middle ear is not altogether clear. The aim of our research was to study the movements of pars flaccida in altering the air volume in the middle ear. By using a sond placed either in the tympanic bulla or in the Eustachian tube in the rat, the middle ear can be insufflated or aspirated with exact volumes of air. Pars flaccida reacted promptly to the changes, while pars tensa remained immobile. A large air volume caused perforation of the pars flaccida. It seems that pars flaccida's function may consist in maintaining a constant middle ear pressure within certain limits, by changing its position.
松弛部在中耳功能中所起的作用尚不完全清楚。我们研究的目的是探讨松弛部在改变中耳空气容量方面的运动情况。通过在大鼠的鼓泡或咽鼓管中放置一个探头，可以用精确体积的空气对中耳进行吹入或吸出操作。松弛部对这些变化反应迅速，而紧张部则保持不动。大量空气会导致松弛部穿孔。看来松弛部的功能可能在于通过改变其位置在一定限度内维持中耳压力恒定。
