Physiology 2130 Lecture Notes - Lecture 15: Lactose Intolerance, Common Bile Duct, Digestive Enzyme
17 Oct 2016
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Document Summary
In the mouth, food is broken up by chewing. Anatomy and basic function (mastication) and is mixed with saliva. The salivary glands produce saliva to moisten and begin digesting some food particles. The esophagus is a straight muscular tube that connects the mouth and pharynx (not shown) to the stomach. The stomach stores, mixes, and digests some food and delivers food to the small intestine. The liver has many functions, but for digestion it produces and secretes bile. The pancreas secretes digestive enzymes, hormones, and bicarbonate. The small intestine allows digestion and absorption of most food particles. The large intestine stores and concentrates undigested material and absorbs salt and water. The rectum is the site where the defecation reflex is triggered. Secretion involves the release of digestive fluids into the lumen of the digestive tract. This fluid may include water, mucus, acid, electrolytes, enzymes, bile salts, and digestive enzymes.
