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Dugesia

2013-11-13 来源: 类别: 更多范文

Dugesia This essay gives you background information about Dugesia, a type of flatworm. It\'ll tell you about the movement of the flatworm, the passage of food entering the body, and the functions of the structures on the body of a Dugesia. An earthworm\'s body has more than 100 segments(Feldkamp, page 734). The worm anchors some of the middle segments by their setae and attracts the circular muscles infront of those segments to move (Feldkamp, page 734). Earthworms feed by ingesting the soil that they burrow (Feldkamp, page 734). The soil passes through the esophagus, the crop for temporary storage, and the gizzard to grind soil (Feldkamp, page 734). The digested organic compounds and nutrients are absorbed by the blood (Feldkamp, page 734). An earthworm has a closed circulatory system transport oxygen, carbon dioxide, nutrients, and page, feldkamp, through, body, blood, soil, segments, worm, vessel, ventral, system, structures, sensory, oxygen, organs, nutrients, information, ganglia, functions, flatworm, end, earthworms, dugesia, dioxide, carbon, about, water, wastes, vibrations, type, tubules, travels, transport
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