Digestive vacuoles are vesicles in the cytoplasm of cells where intracellular digestion occurs in protozoa and sponges. They are formed by swallowing solid particles or cells, as well as liquid particles. They do not accumulate storage substances.
Digestive vacuoles of protists are designed to digest food material absorbed by phagocytosis. After digestion of food and absorption of dissolved nutrients into the cytoplasm, undigested residues are exocytized, and the digestive vacuole membrane is embedded in the cell plasma membrane. Therefore, the digestive vacuole is a temporary organoid, which fundamentally distinguishes it from other vacuoles of the cell.
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