1) The brain consists of two nodes connected together ganglia called both cerebral ganglia Cabral. The brain is a separate nerve supply to the organs around the mouth and articulate the front two), ganglia below the larynx. The nerves that branch out from the brain, bypassing the throat. Converge and small nerve branches. Separate the head with 3) ventral nerve (ventral nerve cord) is separated from the main nerve ganglia.
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