Examples of animal digestive systems.

branching saclike gut single opening takes in food, expels waste pharynx A Incomplete digestive system of a flatworm. pharynx , esophagus stomach mouth with tongue small intestine large intestine cloaca (opening through which liver gallbladder pancreas , , digestive wastes, . _;v_-//’/ urinary wastes, ‘ and gametes exit B Complete digestive the body) system of a frog. esophagus Cf0P glandular part of stomach gizzard intestines Cloaca C Complete digestive system of a bird. The crop is an expandable organ for storing food. The muscular gizzard grinds up food.