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rhopalium
Rhopalia (singular: rhopalium) are small sensory structures of ''Scyphozoa'' (typical jellyfish) and ''Cubozoa'' (box jellies). In ''Aurelia'' they lie in marginal indententions around the bell and are flanked by rhopalial lappets. Specialized structures to sense light (ocelli) and perceive gravity (statoliths) are usually present. They also control the pace of swimming-muscle contraction. ''Cubozoan ocelli'' are the most complex of Cnidarians, and resemble the image-forming eyes of squids, octopuses and vertebrates. ==See also==
*Nerve net
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「rhopalium」の詳細全文を読む
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