Phillips D W
Tissue Cell. 1979;11(4):623-32. doi: 10.1016/0040-8166(79)90019-3.
Previous studies have indicated that the mantle margin of the gastropod mollusc Notoacmea scutum is sensitive to chemical, photic, and mechanical stimulation. Here, the ultrastructure of sensory cells on the mantle tentacles of N. scutum is examined by transmission electron microscopy to determine if morphological types of sensory cells can be correlated with known sensory capabilities. The sensory cells of the mantle tentacles are found to be ciliated, primary receptors with subepithelial nuclei. The ciliated sensory endings are concentrated at the tip of the tentacles, but also occur in smaller numbers along the shaft. Ultrastructural differences between cilia form the basis of distinguishing two types of sensory ending. Type 1 sensory endings, which are over 90% of the endings, bar unusual cilia that typically are filled with an electron-dense material. Type 2 sensory endings bear cilia that have a 9 + 2 arrangement of longitudinal elements and thus more closely resemble previously reported sensory cilia of molluscs.
先前的研究表明，腹足纲软体动物盾拟帽贝的外套膜边缘对化学、光和机械刺激敏感。在此，通过透射电子显微镜检查盾拟帽贝外套膜触手感觉细胞的超微结构，以确定感觉细胞的形态类型是否与已知的感觉能力相关。发现外套膜触手的感觉细胞是具纤毛的初级感受器，有上皮下核。具纤毛的感觉末梢集中在触手尖端，但沿柄部也有少量分布。纤毛之间的超微结构差异构成了区分两种感觉末梢的基础。1型感觉末梢占末梢总数的90%以上，其纤毛异常，通常充满电子致密物质。2型感觉末梢的纤毛具有9+2排列的纵向元件，因此更类似于先前报道的软体动物感觉纤毛。
