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首页> 外文期刊>Zoological Science >Cardiac nervous system in the ostracod crustacean Vargula hilgendorfii
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Cardiac nervous system in the ostracod crustacean Vargula hilgendorfii

机译：rac类甲壳动物Vargula hilgendorfii的心脏神经系统

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摘要

We examined morphologically innervation of the heart of the ostracod crustacean Vargula hilgendorfii. The heart is single chambered and composed of a single layer of myocardial cells characterized by localization of myofibrils at the epicardial side. A nerve net in the heart was determined by vital staining with methylene blue. Electron microscopy revealed that a single neuron situated on the outer surface of the dorsal heart wall sends an axon into the heart wall. The axon of the dorsal neuron is branched widely and forms many neuromuscular junctions on the myocardial cells. A pair of extrinsic nerves, each of which contains several axons, enters the heart bilaterally and forms numerous nerve terminals on the dorsal neuron and myocardial cells, while no synaptic structures were found in the nerve terminals. The results suggest that the heart of V. hilgendorfii is neurogenic, with a single cardiac neuron having both pacemaker and motor functions.
机译：我们检查了the类甲壳动物Vargula hilgendorfii心脏的形态学神经支配。心脏是单腔的，由一层心肌细胞组成，其特征是肌原纤维位于心外膜一侧。通过亚甲基蓝的重要染色确定心脏中的神经网。电子显微镜显示，位于背心壁外表面的单个神经元将轴突送入心脏壁。背神经元的轴突广泛分支并在心肌细胞上形成许多神经肌肉接头。一对各自包含数个轴突的外在神经，双侧进入心脏并在背神经元和心肌细胞上形成许多神经末梢，而在神经末梢未发现突触结构。结果表明，希尔根多夫弧菌的心脏具有神经源性，单个心脏神经元同时具有起搏器和运动功能。

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