Gastrovascular cavity — Free Biology Illustration

Biology

Gastrovascular cavity

Simple sac-like gastrovascular cavity shown in cross section as a hollow rounded, elongated, tubular, or pouch-shaped internal digestive chamber within soft tissue. It has smooth pale pink to beige or cream tissue walls, a clear central lumen, and a single opening to the outside at one end that serves as both entrance and exit, with no separate exit opening. The inner lining is smooth and the overall form is organic and slightly irregular, suitable for a simple sac-like body, embryo, or polyp. Minor inward branching or small extensions near the entrance may be present, but there are no extensive side branches.

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