A central body cavity in cnidarians and some other simple animals that serves both digestive and circulatory functions. Food is digested within this cavity, and the resulting nutrients are distributed throughout the body.
From Greek 'gaster' meaning stomach and Latin 'vasculum' meaning small vessel, literally 'stomach-vessel cavity.' The term reflects the dual function of this cavity as both digestive chamber and circulatory system, coined when biologists recognized this unique anatomical feature.
The gastrovascular cavity is like having your stomach and bloodstream as the same space - food gets digested right where it needs to go! This simple system works so well that cnidarians have used it successfully for over 500 million years.
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