单词 | nerve net |
释义 | nerve netnerve netnerve netnerve net[′nərv ‚net]nerve netnerve netnerve neta system of interconnecting nerve cells, in the form of a net, found in those groups of invertebrates which lack a CENTRAL NERVOUS SYSTEM, such as COELENTERATES and ECHINODERMS. In other groups the nerve net is almost nonexistent. Conduction is slow across the net and is often in all directions, as the synapses are not usually unidirectional. |
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