The gastrodermis is a layer of cells found in certain animals, such as cnidarians (jellyfish, corals, sea anemones), flatworms, and some other invertebrates. It lines the inner cavity of the animal's body, which serves as both the digestive system and the site of nutrient absorption. In cnidarians, the gastrodermis is a thin layer of cells that lines the central cavity (also called the gastrovascular cavity) of the animal's body. This cavity has a single opening that serves as both the mouth and the anus. The gastrodermis is responsible for the digestion of food, the absorption of nutrients, and the distribution of those nutrients throughout the body. In flatworms, the gastrodermis is a more complex structure that lines the interior of the animal's body, forming a branching network of tubes and channels. This network is called the gastrovascular system and functions in a manner similar to the circulatory system of more complex animals. The gastrodermis in flatworms is also responsible for digestion and nutrient absorption. Overall, the gastrodermis plays a crucial role in the nutrition and survival of these animals, and its function and structure can vary greatly between different species.
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