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Earthworm dissection made solid: this dorsal cutaway opens the tapered body to reveal the internal organs in raised relief. The ringed head end leads to the pharynx and the paired aortic arch hearts, flanked by seminal vesicles, before the crop and gizzard give way to the long segmented intestine. Ribbed segments and paired nephridia line both sides of the body wall. It makes a reusable biology classroom model for comparing invertebrate anatomy, studying for a dissection lab, or labelling organ systems without a real specimen.

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