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The DIGESTIVE system of frog has digestive tract and the accessory organs which help to process the food consumed into small molecules (nutrients) which then can be easily absorbed and then utilized by the cells of the body.

Parts of the digestive system of a frog includes:

Mouth
Pharynx
Oesophagus
Stomach
Small intestine
Large intestine
Cloaca
Accessory organs
Characteristics of Frog’s digestive system:

Frogs have maxillary teeth along their upper JAW which are used to hold food before it is SWALLOWED. These teeth are very weak, and cannot be used to chew or catch and harm agile prey.
The frog uses its sticky, cleft tongue to catch flies and other small moving prey. The tongue normally lies coiled in the mouth, free at the back and attached to the mandible at the front. It can be shot out and retracted at great speed.
Some frogs have no tongue and just stuff food into their mouths with their hands.
The eyes assist in the swallowing of food as they can be retracted through holes in the SKULL and help push food down the throat.
The food then moves through the oesophagus into the stomach where digestive enzymes are added and it is churned up. It then proceeds to the small intestine (duodenum and ileum) where most digestion occurs. Pancreatic juice from the pancreas, and bile, produced by the LIVER and stored in the gallbladder, are secreted into the small intestine, where the fluids digest the food and the nutrients are absorbed. The food residue passes into the large intestine where excess water is removed and the wastes are passed out through the cloca.

Hope this answer will help you..《《