Hanamure Y, Lim D J
Am J Otolaryngol. 1987 May-Jun;8(3):127-43. doi: 10.1016/s0196-0709(87)80035-2.
The middle ear mucosa and eustachian tube of the normal chinchilla were studied quantitatively and under light microscopy to determine the distribution of each cell type of the lining epithelium and subepithelial gland. The middle ear mucosa consisted of columnar epithelium, cuboidal epithelium, and squamous epithelium. The lining epithelium of the eustachian tube was ciliated pseudostratified columnar epithelium. These epithelia were composed of ciliated, secretory, nonciliated (nonsecretory), and basal cells. The density of the ciliated cells was highest in the columnar epithelium area of the transitional zone of the middle ear mucosa. However, the density of the secretory cells was highest in the pharyngeal orifice of the eustachian tube. The nonciliated cell density was highest in the squamous epithelium area of the middle ear mucosa and decreased progressively toward the tympanic orifice of the eustachian tube. In the eustachian tube, the nonciliated cell density was highest in the pharyngeal portion of the eustachian tube, especially in the upper portion of the lateral wall. The subepithelial glands were tubuloacinar mixed glands composed of serous demilunes and mucous acini. The glands were localized primarily in the pharyngeal orifice and pharyngeal portion of the eustachian tube, and their ductal openings were present primarily in the inferior portion of the eustachian tube.
对正常龙猫的中耳黏膜和咽鼓管进行了定量研究，并在光学显微镜下观察，以确定衬里上皮和上皮下腺各细胞类型的分布。中耳黏膜由柱状上皮、立方上皮和鳞状上皮组成。咽鼓管的衬里上皮为纤毛假复层柱状上皮。这些上皮由纤毛细胞、分泌细胞、无纤毛（无分泌功能）细胞和基底细胞组成。纤毛细胞密度在中耳黏膜过渡区的柱状上皮区域最高。然而，分泌细胞密度在咽鼓管的咽口处最高。无纤毛细胞密度在中耳黏膜的鳞状上皮区域最高，并朝着咽鼓管的鼓口逐渐降低。在咽鼓管中，无纤毛细胞密度在咽鼓管的咽部最高，尤其是在外侧壁的上部。上皮下腺为管泡状混合腺，由浆液半月体和黏液腺泡组成。腺体主要位于咽鼓管的咽口和咽部，其导管开口主要位于咽鼓管的下部。
