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Chapter-3: INDUSTRY OVERVIEW

STRUCTURE AND FUNCTION OF THE GASTROINTESTINAL SYSTEM 7

STRUCTURE AND FUNCTION (CONTINUED) 8

INGESTION AND PROPULSION OF FOOD 9

Pharynx 9

Esophagus 10

DIGESTION AND ABSORPTION 10

Mouth 10

Stomach 10

Small Intestines 11

Physiology of Digestion 11

Physiology of Digestion (Continued) 12

ELIMINATION 13

Large Intestine 13

LIVER, BILIARY TRACT AND PANCREAS 14

LIVER 14

BILIARY TRACT 14

Bilirubin Metabolism 15

PANCREAS 15

GASTROINTESTINAL TRACT DISORDERS 15

DYSPHAGIA 15

Dysphagia (Continued) 16

ESOPHAGEAL AND ABDOMINAL PAIN 17

VOMITING 18

INTESTINAL GAS 18

CONSTIPATION 19

DIARRHEA 19

TABLE 1 CAUSES OF DIARRHEA 20

GASTROINTESTINAL TRACT WALL DISORDERS 21

GASTRITIS 21

TABLE 2 COMMON CAUSES OF GASTRITIS 21

GASTROENTERITIS 22

PEPTIC ULCER DISEASE 23

Peptic Ulcer Disease (Continued) 24

GASTRIC ULCERS 25

DUODENAL ULCERS 26

INFLAMMATORY BOWEL DISEASE 27

ULCERATIVE COLITIS 28

CROHN'S DISEASE 28

ENTEROCOLITIS 29

DIVERTICULAR DISEASE 30

GASTROINTESTINAL TRACT MOTILITY DISORDERS 30

IRRITABLE BOWEL SYNDROME 30

INTESTINAL OBSTRUCTION 31

GASTROINTESTINAL MALABSORPTION DISORDERS 32

CELIAC DISEASE 32

TROPICAL SPRUE 33

CANCERS OF THE GASTROINTESTINAL TRACT 33

ESOPHAGEAL CANCER 33

GASTRIC CANCER 34

LIVER CANCER 35

PANCREATIC CANCER 36

SMALL INTESTINAL CANCER 37

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