2. The muscle of the esophagus.
3. Lies at the opening of the common bile duct into the duodenum.
4. The duct connecting the gallbladder to the common bile duct.
5. Folds of the stomach.
6. Cells which secrete H+ into the stomach.
7. Glands which secrete an alkaline mucus into the duodenum.
8. Organ in addition to #7 which has special seromucous glands.
9. Specialized surface modification of the small intestine.
10. Specialized surface modification of the stomach.
11. Muscle which causes the mucosa to shift exposing it to more contents.
12. Muscle which causes segmentation.
13. Muscle which causes wave-like peristaltic contractions.
14. Muscle found in bands in the colon.
15. Cells which secrete mucus.
16. Hormone which produces positive feedback on the stomach.
17. Hormone which inhibits the stomach.
18. Hormone which stimulates the gallbladder, liver, and pancreas.
19. Sphincter which prevents backflow of chyle into stomach.
20. Target of the reflex initiated when food enters the stomach.
Answers:
1. Stratified squamous, 2. skeletal muscle/smooth muscle mix, 3. sphincter of Oddi, 4. cystic duct,
5. rugae, 6. parietal cells, 7. Brunner's glands, 8. esophagus, 9. villi, 10. gastric pits,
11. muscularis mucosae, 12.circular smooth muscle, 13. longitudinal smooth muscle,
14. longitudinal smooth muscle (taenia coli), 15. goblet cells, 16. gastrin, 17. GIP, enterogastrone, CCK
18. CCK, 19. pyloric sphincter, 20. Ileum and colon (gastrocolic and gastroiliac reflexes)