Fehèr E
Acta Anat (Basel). 1976;94(1):78-88.
An attempt is made to separate in the submucous plexus and mucous membrane of the chronically isolated intestine of the cat the fibers originating from the myenteric plexus and those originating from the submucous plexus by secondary degeneration after the extirpation of the myenteric plexus. A considerable part of the nerve processes in the submucous plexus originate from the cells of the myenteric ganglia and establish direct synaptic relationships between the ganglion cells, or are very close to the blood vessels. The numerous intact synapses between the different nerve elements in the submucous plexus point to local reflex connexions within the plexus itself. The degeneration of sub-epithelial nerve elements, containing always clear and dense-core (1,000-1,200 A in diameter) vesicles besides the numerous intact nerve elements, might indicate the presence of real sensory nerve processes in this layer. The terminal fibers remaining intact after removal of the myenteric plexus contain numerous medium-sized dense-core vesicles in potassium permanganate-fixed material. This suggests that there are cells containing 5-hydroxytryptamine in the submucous plexus.
通过切除猫慢性离体肠段的肌间神经丛后发生的继发性变性，试图在其黏膜下神经丛和黏膜中分离出来自肌间神经丛的纤维和来自黏膜下神经丛的纤维。黏膜下神经丛中的相当一部分神经突起起源于肌间神经节的细胞，并在神经节细胞之间建立直接的突触关系，或者与血管非常接近。黏膜下神经丛中不同神经元件之间大量完整的突触表明丛内存在局部反射连接。上皮下神经元件的变性，除了众多完整的神经元件外，总是含有清晰的、直径为1000 - 1200埃的致密核心小泡，这可能表明该层存在真正的感觉神经突起。在高锰酸钾固定的材料中，去除肌间神经丛后仍保持完整的终末纤维含有大量中等大小的致密核心小泡。这表明黏膜下神经丛中存在含5 - 羟色胺的细胞。
