1. Slide 155, pharynx, H&E, 4x obj. mucosal epithelium lamina propria
elastic fibers
skeletal muscle
muscularis externa

2. Slide 152, pharynx, H&E, 10x obj. mucosal epithelium lamina propria
elastic fibers
skeletal muscle of muscularis externa

3. Slide 152, pharynx, H&E, 4x obj. mucosal epithelium elastic fibers
lamina
propria
skeletal muscle
muscularis externa
mucous glands

4. Slide 153, esophagus, H&E, 4x obj.
mucosal epithelium
mucosa
lamina
propria
muscularis mucosa
submucosal glands
submucosa
muscularis externa
(smooth muscle)

5. Slide 153, esophagus, H&E, 10x obj. muscularis externa (smooth muscle)
epithelium of mucosa
lamina
propria
muscularis mucosa
submucosal glands
submucosa
muscularis externa (smooth muscle)

6. Slide 153, esophagus, H&E, 10x obj.
muscularis externa
(inner circular layer
of smooth muscle)
myenteric plexus
ganglion cells of myenteric plexus
muscularis externa
(outer longitudinal layer
of smooth muscle)
40x obj.

7. transition to cardiac region
Slide 155, cardio-esophageal junction
transition to cardiac region
esophageal region
fundic region

8. Slide 155, esophageal region, H&E, 20x obj.
stratified epithelium of mucosa
muscularis mucosa
muscularis externa
(inner circular layer
Of smooth muscle)
submucosa

9. Slide 155, cardiac region, H&E, 20x obj.
gastric pit
tangential section of esophageal muscosa
cardiac glands (mucous)
muscularis mucosa

10. Slide 155, cardiac region, H&E, 40x obj.
gastric pit
extension of muscularis mucosa
cardiac gland
(mucous)

11. Slide 155, fundic region, H&E, 4x obj.
gastric pits
gastric glands

12. Gastric glands Slide 155, 40x obj. Slide 155, 20x obj.PC PC CC CC
muscularis mucosa
PC = parietal cells
CC = chief cells
Slide 156, 40x obj.
Slide 157, 40x obj. PC CC PC CC
muscularis mucosa

13. Slide 156, stomach, H&E, 4x obj. gastric pits parietal cells (mostly)
glands
mucosa
chief cells
(mostly)
muscularis mucosa
submucosa
innermost oblique layer
muscularis externa
middle circular layer
outer longitudinal layer

14. (PAS stains mucus purple)
Slide 160, stomach, PAS, 10x obj.
(PAS stains mucus purple)
gastric pits
gastric glands
muscularis mucosa
submucosa

15. transition to duodenum
Slide 162,
pylorus-duodenum junction
transition to duodenum
pylorus
duodenum

16. Slide 162, pylorus, 10x obj. gastric pits muscularis mucosa
pyloric glands
submucosa
muscularis externa

17. Slide 162, pylorus, 40x obj. gastric pit pyloric gland (mucous)
muscularis mucosa

18. pyloric glands (above muscularis mucosa)
Slide 162
transition to duodenum
4x obj.
pyloric glands (above muscularis mucosa)
submucosal
(Brunner’s)
glands --below
muscularis mucosa
pyloric
mucosa
duodenal
mucosa

19. Slide 162, transition to duodenum, 10x obj.
Brunner’s glands
muscularis mucosa
submucosal (Brunner’s) glands
(mostly below muscularis mucosa but some portions extend above)
duodenal
mucosal
epithelium

20. Slide 162, duodenum, 4x obj. duodenal mucosa muscularis mucosa
submucosa
Brunner’s glands

21. Slide 162, duodenum, 20x obj. duodenal epithelium lamina propria
Brunner’s glands
muscularis mucosa
Brunner’s glands