BIOL 1175 Lecture Notes - Lipase, Cecum, Bile Acid
Document Summary
Ingestion: intake of blood via the mouth. Digestion mechanically or chemically break down food into their subunits. Movement food must be moved along the gi tract in order to fulfill all functions. Absorption movement of nutrients across the gi tract wall to be delivered to cells/tissues via blood. Mouth -> pharynx -> esophagus -> stomach -> small intestine -> large intestine. Mucosa innermost layer that produces mucus that protect the lining and also produce digestive enzymes. Submucosa 2nd layer of loose connective tissue that contains blood vessels, lymphatic vessels and nerves (protection from bacteria from food we ingest) Muscularis 3rd layer made of 2 layer of smooth muscle that move food along the. Serosa outer lining that is part of the peritoneum that covers abdominal organs. 3 pairs of salivary glands secrete salivary amylase (an enzyme) that begins carbohydrate digestion. Tonsils (2^o lymph organ) at the back of the mouth and other lymphatic tissues are important in fighting disease.