1. Describe nervous system in Planaria.
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Planarians have cephalic ganglia (the brain), two ventral nerve cords, and many sensory neurons. All cells of the nervous system can be regenerated following injuries of myriad types, including complete decapitation.
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The planarian CNS is composed of a brain in the head region and a pair of ventral nerve cords (VNCs) that extend the length of the body (Fig. ... A pair of eyes is located on the dorsal side of the brain. The size and number of brain neurons vary depending on the size of the planarian's body
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