Cardiac Nervous System in the Ostracod Crustacean Vargula hilgendorfii(Physiology)
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概要
- 論文の詳細を見る
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.
- 社団法人日本動物学会の論文
- 2001-07-01
著者
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Matsuzaki O
Univ. Tsukuba Ibaraki Jpn
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Matsuzaki Osamu
Institute Of Biological Sciences University Of Tsukuba
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Ando Y
Institute Of Biological Sciences University Of Tsukuba
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Ando Yumiko
Institute of Biological Sciences, University of Tsukuba
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Yamagishi Hiroshi
Institute of Biological Sciences, University of Tsukuba
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Ando Yumiko
Institute Of Biological Sciences University Of Tsukuba
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Yamagishi H
Department Of Biotechnology Kyoto Sangyo University
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Yamagishi Hiroshi
Institute Of Biological Sciences Univeisity Of Tsukuloa
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