nutrition in hydra... gastrovascular cavity (GVC) points to remember

GVC in hydra incomplete digestive system... hypostome..... uptake by tentacles and further digestion extracellular and intracellular digestion extra cellular : digestive enz secreted by gastrodem cells intra cellular :phagocytosis by gastrodem cells in video.. by mistake i hv said gastroderm cells excrete enzymes... plz note it is not excrete it is secrete enzymes