Malinovský L, Pác L
Z Mikrosk Anat Forsch. 1979;93(4):673-88.
The ultrastructure of sensory nerve endings was examined in the snout skin in 3 adult hedgehogs (Erinaceus europaeus). The material was taken intravitally under total anaesthesia and processed in a usual way for the electron microscopy. The corpuscles were evaluated in the individual sections and series sections made through the whole corpuscle. In the superficial layers of the dermis simple sensory corpuscles and free endings were found. The simple sensory corpuscles can be divided into three types. a) Corpuscles containing a greater number of lamellae in the inner core, the lamellae are arranged regularly and are separated by two opposite clefts. The capsule is formed by only several lamellae undoubtedly of fibrocytic origin. b) Corpuscles containing a smaller number of wider lamellae in the inner core situated often at random. The clefts are also irregular and are often closed in the superficial layers of the inner core. The capsule is quite simple mostly formed by a single lamella of fibrocyte which often fails to form a continuous coat of the corpuscle. c) The third type is typical of its inner core being formed by few lamellae arranged irregularly. These corpuscles have no connective tissue capsule and are separated from the environments only by the basement membrane of superficial lamellae of the inner core. The corpuscles of the second type resemble considerably the developmental stages of simple sensory corpuscles as described in the literature in the cat. They are the same in size or smaller than the corpuscles of the first type. The free nerve endings occurred in two forms. a) Flattened (lanciform) nerve terminals. The axon is rich in mitochondria. The sides of the flattened terminal is lined with one to three wide lamellae while the axon reaches as far as the surface of the formation which is covered only with the basement membrane. b) Typical free endings rich in mitochondria which are embedded in the cytoplasm of Schwann cells or occasionally are covered only with the basement membrane. The lanciform endings which are not linked up with the hairs here may represent a transition from free endings to simple sensory corpuscles.
对3只成年刺猬（欧洲刺猬）吻部皮肤的感觉神经末梢超微结构进行了研究。材料在全身麻醉下活体采集，并按常规方法处理用于电子显微镜观察。在各个切片以及贯穿整个小体制作的连续切片中对小体进行评估。在真皮浅层发现了简单感觉小体和游离末梢。简单感觉小体可分为三种类型。a）内核中含有较多板层的小体，板层排列规则，由两条相对的裂隙分隔。被膜仅由几条无疑起源于成纤维细胞的板层形成。b）内核中含有较少且较宽板层的小体，这些板层常随机分布。裂隙也不规则，在内核浅层常闭合。被膜相当简单，大多由单个成纤维细胞板层形成，该板层常不能形成小体的连续包被。c）第三种类型的典型特征是其内核由少数不规则排列的板层形成。这些小体没有结缔组织被膜，仅通过内核浅层板层的基底膜与周围环境分隔。第二种类型的小体与文献中描述的猫的简单感觉小体的发育阶段非常相似。它们的大小与第一种类型的小体相同或更小。游离神经末梢有两种形式。a）扁平（柳叶状）神经末梢。轴突富含线粒体。扁平末梢的侧面衬有一到三条宽板层，而轴突一直延伸到仅被基底膜覆盖的结构表面。b）典型的富含线粒体的游离末梢，嵌入施万细胞的细胞质中，或偶尔仅被基底膜覆盖。这里未与毛发相连的柳叶状末梢可能代表从游离末梢到简单感觉小体的过渡。
