Anderson C, Campbell G
Department of Zoology, University of Melbourne, Australia.
Cell Tissue Res. 1989 Mar;255(3):601-9. doi: 10.1007/BF00218797.
The gut of the toad, Bufo marinus, was examined for evidence of enteric neurons containing 5-hydroxytryptamine-like immunoreactivity. Such neurons were absent from the stomach. They were present in the small intestine, with processes confined to the myenteric plexus. Immunoreactive nerve cell bodies lay on branches of the pelvic nerves supplying the large intestine; fibres were found in the submucosa of the posterior large intestine and in the muscularis external of the anterior large intestine. It is concluded, on morphological grounds, that the neurons in the small intestine are interneurons, whereas those in the large intestine are postganglionic parasympathetic motoneurons.
对海蟾蜍（Bufo marinus）的肠道进行检查，以寻找含有5-羟色胺样免疫反应性的肠神经元证据。胃中不存在此类神经元。它们存在于小肠中，其突起局限于肌间神经丛。免疫反应性神经细胞体位于供应大肠的盆神经分支上；在后段大肠的黏膜下层和前段大肠的外肌层中发现了纤维。基于形态学依据得出结论，小肠中的神经元是中间神经元，而大肠中的神经元是节后副交感运动神经元。
