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Study the external and internal anatomy of the earthworm from a general "overview" right down to microscopic detail of each system. Watch videos of difficult to see concepts like the movement of the lateral setae; the peristaltic movement of the worm, or the surprisinglycommon invasion of a circulatory or excretory parasite! Participate in an interactive dissection. The Earthworm includes over 90 images, slides, diagrams and more than 500 questions. Full screen images. Complete interactive dissection. Testing. DryLab Plus is Fully editable.