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In order to ingest food, frogs use their tongue as an appendage to capture and bring in to their mouth flies and other prey. They have vomerine teeth in the roof of the mouth to aid in holding their prey and maxillary teeth which help chew the food. Once swallowed, it passes through the espophagus and to the stomach. In the stomach, chemical digestion occurs. The food next passes through the small intestine, where further hydrolysis occurs. They have a pancreas which secretes digestive enzymes as well as the liver which produces bile. Bile can emulsify fat and is stored in the tiny gall bladder until it is needed. The large intestine collects undigested material and it then eventually reaches the cloaca. This is a common duct for the removal of undigested matter or feces and can also be used for excretion of urea and for the exit of sperm and eggs during reproduction.
mouth (maxillary teeth) to esophagus to stomach, to the small intestine, where bile from the gall bladder and pancreatic secretions mix in. The small intestine is where most digestion and food absorption occurs. then it goes to the large intestine where water is absorbed and then the waste is excreted through the cloaca.
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