Exam 2 GI System

Question 1

Ingestion and what is involved

Answer 1

Intake of food involving mouth, pharynx, esophagus

Question 2

Digestion and what is involved

Answer 2

Stomach and small intestine. Chemical and physical breakdown of food into absorbable substances

Question 3

Absorption and what is involved

Answer 3

Stomach and small intestine. Uptake of nutrients from the gut lumen into the bloodstream

Question 4

Elimination and what is involved

Answer 4

Large intestine. Defecation of feces (75% water), from the large intestine through the anus.

Question 5

Age related changes of the GI system

Answer 5

Decreased motility, delayed emptying of esophagus, 30-40% chronic constipation, liver size decreases after 50, gallbladder disease increase.

Question 6

Purpose of a colonoscopy

Answer 6

Visualize the entire colon, used to diagnose or detect inflammatory bowel disease, polyps, tumors and diverticulosis.

Question 7

Purpose of an esophagogastroduodenoscopy

Answer 7

Visualizes the mucosal lining of the esophagus, stomach, and duodenum. Detects inflammation, ulcerations, tumors, varices and Mallory-Weiss tears