Physiology 2130 Lecture Notes - Lecture 15: Bile Acid, Digestive Enzyme, Salivary Gland
25 May 2016
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Module 15: digestive system | page 1 of 9. Main function of the digestive system is to break down organic nutrients so they can be absorbed into the body: these organic nutrients can be: carbohydrates, proteins, fats, water, vitamins and minerals. Basic processes of the digestive system: secretion involves the release of digestive fluids into the lumen of the digestive tract. Module 15: digestive system | page 2 of 9. Digestion of your meal begins in the mouth, where it is broken down by chewing/mastication and is mixed with saliva to form a bolus. Divided into 3 general areas: fundus (upper, dome-shaped), body (middle largest part), antrum (pyloric region; lower part) Pyloric sphincter located at the distal portion, regulates emptying of stomach into the first part of the small intestine (duodenum) Stomach (when empty) is thrown into folds/rugae, which increases surface area and allows for expansion of stomach as it fills with food.
