Title: Chapter 17 Questions Flashcards | Quizlet
Headings: Chapter 17 Questions
Chapter 17 Questions
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Digestive Tract
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Content: -Trypsin/chymotrypsin: digest dietary protein
-Pancreatic amylase: digests starch
-Pancreatic lipase: digests fat
-Ribonuclease/deoxyribonuclease: digest RNA and DNA respectively
What stimulates cholecystokinin secretion and how does CCK affect other parts of the digestive system? -Stimulated by presence of fat in chyme
-Stimulates pancreas to secrete enzymes, contracts gallbladder, relaxes ampulla sphincter so secretions enter duodenum and mix with chyme
Describe the gross and microscopic anatomy of the small intestine, including the differences in its three regions. -Three regions: duodenum, jejunum, and ileum
-Duodenum is the first 25 cm, has prominent duodenal glands to secrete bicarbonate mucus
-Jejunum: first 40% of small intestine beyond duodenum, thick wall with rich blood supply
-Ileum: last 60% of small intestine, thinner wall, prominent lymphatic nodules
State how and for what functional reason the mucosa of the small intestine differs from that of the stomach.