1	ANATOMY LECTURE SERIES DIGESTIVE SYSTEM
2	LINING OF THE DIGESTIVE SYSTEM Peritoneum - two-layered membrane Mesentery - part that attaches to posterior wall of abdominal cavity Greater omentum - anterior portion that protects abdominal organs
3	FUNCTIONS OF THE DIGESTIVE SYSTEM Break food into smaller pieces Change food chemically into fat, carbohydrates, and protein Absorb nutrients into blood capillaries of small intestines Eliminate waste products of digestion
4	ORGANS OF DIGESTION
5	ORGANS OF DIGESTION Many organs contribute to digestion Mouth Tongue Salivary glands
6	ORGANS OF DIGESTION
7	TEETH/ ACCESSORY ORGAN OF DIGESTION Structure of a tooth Crown Neck Root Periodontal membrane Pulp cavity Dentin Enamel
8	ESOPHAGUS The esophagus is a muscular tube beginning at the lower end of the pharynx, passing through the diaphragm and connecting to the upper portion of the stomach
9	STOMACH Stomach is divided into 3 portions Fundus - upper part Greater curvature (body) - middle Pylorus - lower portion Gastric juices are secreted by millions of gastric glands
10	SMALL INTESTINE The final preparation of food to be absorbed occurs in the small intestine Divided into three sections Duodenum Jejunum Ileum
11	SMALL INTESTINE Digestive juices Enzymes, secretin, cholecystokinin stimulate digestive juices Pancreatic juices break down food Bile emulsifies fat Intestinal juices break food down further for absorption
12	SMALL INTESTINE Absorption in the small intestine is accomplished through millions of villi. The indigestible portion is passed through to the large intestine
13	LIVER/ACCESSORY ORGAN OF DIGESTION Functions of the liver Manufactures bile which is necessary for fat digestion Produces and stores glucose in the form of glucogen Detoxifies alcohol, drugs and other harmful substances Manufactures blood proteins
14	LIVER/ACCESSORY ORGAN OF DIGESTION Prepares urea, the chief waste product of protein metabolism Stores vitamins A, D, and B complex Breaks down hormones no longer useful to the body Removes old red blood cells and recycles iron content
15	GALLBLADDER The gallbladder stores and concentrates bile when it is not needed by the body
16	LARGE INTESTINE Chyme is semi-liquid food in the large intestine Colon Ascending Traverse Descending Anal Canal
17	GENERAL OVERVIEW OF DIGESTION Mouth Pharynx Esophagus Stomach Small Intestine Large Intestine
18	COMMON DISORDERS OF THE DIGESTIVE SYSTEM Stomatitis Gastroesophageal reflux disease Hiatal hernia Heartburn Gastritis Gastoenteritis Enteritis
19	COMMON DISORDERS OF THE DIGESTIVE SYSTEM Ulcer Inflammatory bowel disease Appendicitis Hepatitis Cirrhosis Cholecystitis Gallstones
20	COMMON DISORDERS OF THE DIGESTIVE SYSTEM Pancreatitis Diverticulosis Diarrhea Constipation Stomach cancer Colon cancer