LIFESCI 2 Chapter Notes - Chapter 47: Pancreatic Lipase Family, Abdominal Cavity, Epithelium
Document Summary
Function of the digestive system: break down the food we eat, absorbs the food to transfer it to cells. Food can be used with oxygen to produce energy. Allowing the food molecules to pass through the digestive system. Most organs are in the abdominal cavity that food must traverse through. Two purposes: mixing the food and propelling it through the digestive system: secretion. Breaking down of food by enzymes in the digestive cavities: absorption. Physical movement of food molecules from the digestive system to the blood. Digestion: polymers vs monomers: proteins are broken down to amino acids, carbohydrates are broken down to glucose, fructose, and galactose, lipids are broken down to fatty acids. Digestive organs: mouth, pharynx, salivary glands. Saliva dissolves food particles to stimulate taste buds. Peristaltic waves push food down: stomach. Located between the esophagus and the small intestine. Functions in gastric mixing and gastric emptying. Lots of cells lining this pit that release mucuous.
