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Explore the intricate workings of the digestive system, from the mouth to the anus, encompassing processes like mechanical and chemical digestion and the roles of key organs like the stomach, pancreas, and liver.
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Mouth • Mechanical digestion - teeth • Chemical digestion – saliva • 11 cm long
Esophagus • Muscular tube • Peristalsis • About 25 cm long
Stomach • Strong muscles • Digestive juices • Chyme • About 22 cm long
Small Intestine • Most digestion occurs here • Molecules pass out through villi into blood • About 690 cm long
Pancreas • Accessory organ • Food does not go through the pancreas • Produces chemicals to help break down macromolecules
Liver • Accessory organ • Has many jobs • Produces bile to help digest fat
Gall Bladder • Accessory organ • Stores bile • Helps digest fat
Large Intestine (Colon) • Absorbs extra nutrients & water • Forms wastes into solid feces • About 152 cm long
Rectum • Stores wastes • About 14 cm long
Anus • Muscle that controls when wastes leaves the body