Shimoda T, Nakanishi E, Yoshino S, Kobayashi S
Department of Home economics, University of kyushuwomens, Kitakyushu, Japan.
Okajimas Folia Anat Jpn. 1996 May;73(1):65-74. doi: 10.2535/ofaj1936.73.1_65.
The tongue of Enhydra lutris (sea otter), died from brain contusion at the first day of its age, was investigated by light and scanning electron microscopy in this study. Three types of papillae (filiform, fungiform and circumvallate papillae) were present on this tongue. In our evaluation, the filiform papillae were divided into four shapes which were conical, club-shaped, large horny and triangular papillae. The different types of filiform papillae were located in different area of this tongue. The fungiform papillae were divided into two shapes, which were hemispherical or club-shaped, and were distributed among the filiform papillae on the dorsal and the margin of the tongue. These papillae had many taste buds in the epithelium of the dorsal aspect of them. The circumvallate papillae were present in a V-shaped row at the posterior part of the lingual body, and many taste buds lay in the epithelium of both the lateral walls facing the trench and dorsal aspect of the papillary body, and then the ducts of the serous glands opened into the floor of the trenches. The lingual mucosa of the interpapillae area at the pharyngeal part of the tongue contained taste buds and the ducts of the mixed glands opened there. Based on our examination, the lingual papillae of this newborn sea otter had many features which were described to be peculiar to young stage of mammals.
本研究通过光学显微镜和扫描电子显微镜对一只出生第一天因脑挫伤死亡的海獭（Enhydra lutris）的舌头进行了研究。该舌头存在三种乳头（丝状乳头、菌状乳头和轮廓乳头）。在我们的评估中，丝状乳头分为四种形状，即圆锥形、棒状、大角质状和三角形乳头。不同类型的丝状乳头位于舌头的不同区域。菌状乳头分为两种形状，即半球形或棒状，分布在舌背和舌缘的丝状乳头之间。这些乳头在其背侧上皮中有许多味蕾。轮廓乳头在舌体后部呈 V 形排列，许多味蕾位于面对沟的侧壁上皮和乳头体的背侧上皮中，然后浆液腺的导管开口于沟底。舌咽部分乳头间区域的舌黏膜含有味蕾，混合腺的导管开口于此。根据我们的检查，这只新生海獭的舌乳头有许多被描述为哺乳动物幼年期特有的特征。
