Mira E, Benazzo M, Galioto P, Calligaro A, Casasco A
Otorhinolaryngological Clinic, IRCCS, Polyclinic S. Matteo, University of Pavia, Italy.
ORL J Otorhinolaryngol Relat Spec. 1988;50(4):251-6. doi: 10.1159/000275999.
Electron microscopy of the rabbit eustachian tube showed the presence of osmiophilic lamellar bodies in the cytoplasm of secretory cells and of osmiophilic free lamellar membranes in the lumen of tubal glands or above the epithelium. Similar structures have been reported in other parts of the respiratory system and in the pulmonary alveoli. The functional significance of these morphological observations is suggestive of a surface-tension-lowering effect on the mucosal lining layer of the eustachian tube and of a possible relationship to the phospholipid surfactant of the lung.
兔咽鼓管的电子显微镜检查显示，分泌细胞的细胞质中存在嗜锇性板层小体，在输卵管腺体腔或上皮上方存在嗜锇性游离板层膜。在呼吸系统的其他部位和肺泡中也报道过类似结构。这些形态学观察结果的功能意义提示其对咽鼓管黏膜衬里层有降低表面张力的作用，并可能与肺的磷脂表面活性剂有关。
