body cavity defined in 1951 yearbody cavity - body cavity;
body cavity - Internal cavity of most triploblastic animals (absent in Platyhelminthes, Nemertea) in which many organs are suspended, allowing their mutual displacement, which is especially important for the gut. Varies much in size in different groups. Bounded externally by body wall. Contains fluid. May develop embryologically in several ways, e.g. from coelom (earthworm, vertebrate), from blood system (Arthropoda) or as intercellular spaces (Nematoda). Primary body cavity, the haemocoel. Secondary body cavity, the coelom.
near body cavity in Knolik
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