1. Stomach Anatomy Located on left side of the abdominal cavity
Food enters at cardioesophageal sphincter
Slide 14.15a
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2. Stomach Anatomy Regions of the stomach
Cardiac region – near the heart
Fundus
Body
Pylorus – funnel-shaped terminal end
Food empties into the small intestine at the pyloric sphincter
Slide 14.15b
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3. Stomach Anatomy Rugae – internal folds of the mucosa External regions
Lesser curvature
Greater curvature
Slide 14.16a
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4. Stomach Anatomy Layers of peritoneum attached to the stomach
Lesser omentum – attaches the liver to the lesser curvature
Greater omentum – attaches the greater curvature to the posterior body wall
Contains fat to insulate, cushion, and protect abdominal organs
Slide 14.16b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

5. Stomach Anatomy Figure 14.4a Slide 14.17
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6. Stomach Functions Acts as a storage tank for food
Site of food breakdown
Chemical breakdown of protein begins
Delivers chyme (processed food) to the small intestine
Slide 14.18
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

7. Specialized Mucosa of the Stomach
Mucous neck cells – sticky alkaline mucus
Gastric glands – gastric juice
Chief cells – protein-digesting enzymes (pepsinogens)
Parietal cells – hydrochloric acid
Endocrine cells –gastrin
Slide 14.19
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8. Structure of the Stomach Mucosa
Gastric pits formed by folded mucosa
Glands and specialized cells are in the gastric gland region
Slide 14.20a
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

9. Structure of the Stomach Mucosa
Figure 14.4b, c
Slide 14.20b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings