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The Digestive System. 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
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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