The nervous system of the earthworm is split up into segments just like the rest of its body. The brain is above the pharynx and is connected to the first ventral ganglion. The brain is important for movement, if the brain of the earthworm is removed, the earthworm will move continuously. If the first ventral ganglion is removed, the earthworm will stop eating and will not dig. Each different segment ganglion gets sensory information from a near by region of the worm's body and controls muscles only in this part of the worm's body .Earthworms have touch, light, vibration, and chemical receptors all along the entire body .
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FUN fact Because they do not have lungs or other specialized respiratory organs, earthworms breathe through their skin.
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Fun FactSome tropical earthworms can grow to nearly ten feet!
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Fun factEach earthworm is both male and female, producing both eggs and sperm.
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