1. Anatomical Parts of Stomach

2. Fundus of Stomach Gastric Rugae (GR) Longitudinal branching Folds in empty stomach. GR 4 Layers: 1) Mucosa (M) 2) Submucosa (SM) 3) Musculosa ; *Inner oblique (IO) *Middle Circular (MC) *Outer Longitudinal (OL) 4) Serosa M SM IO MC OL

3. Wall of Fundus of the Stomach Mucosa, Submucosa, Musculosa & Serosa

4. Parts & Cells of Fundic Glands

5. Fundic Glands: * Occupy most of mucosal thickness. * Perpendicular to the surface, reaching to muscularis mucosa (MM). MM *Very Crowded Minimal C.T. .

6. * Simple Branched Tubular Glands. * Open into lumen by short narrow ducts (Gastric Pits) * Pit: Secretory Portion : 1:3

7. MM MM: Muscularis Mucosa

8. Surface Mucous Cells: * Simple Columnar cells with basal oval Nuclei. * Line the surface epithelium and extend to line the pits . Function: Secrete “Neutral Mucus” which forms a “thick Blanket” for lubrication & protection.

9. Fundic Stomach with a short pit Surface mucus secreting epithelium

10. Mucous Neck Cells * Located at the neck of the glands. * Low Columnar Cells with Vacuolated foamy cytoplasm. * Function: Secrete “Acidic Mucus” which protect gastric mucosa.

15. Fundic Gastric Glands Parietal Cells

16. Musculosa of Fundus: 3 Layers Inner oblique (IO), Middle Circular (MC) and Outer Longitudinal (OL).

17. GP: Gastric Pits, MM: Muscularis Mucosa. M: Mucosa S: Submucosa. O: Inner Oblique C: Middle Circular L: Outer Longitudinal.

19. Ratio between Pit (P): secretory Portion (G) : 1:1 P G

21. Musculosa Of Pylorus 2 Layers Inner Circular (IC) Outer Longitudinal (OL) Circular muscle is Thickened to form “ Pyloric Sphincter ” (PS ) IC OL (PS)

22. Pyloroduodenal Junction duodenum pylorus Pyloric sphincter Brunner’s glands

23. Pyloro-Duodenal Junction

24. Identify the organ (be specific). Describe the characters of the glands. (2)

25. This is a section in the fundic glands Identify the cell indicated by the arrow. (3)

26. (4) a) Identify the cell indicated by the black arrow. b) Identify the layer indicated by the red arrow. This is a section in the lower part of the fundic glands:

27. (a) (b) (5) (a) & (b) are sections in the fundus of the stomach. Identify the layer indicated by the arrow in (a) & (b).

28. (a) (b) (6) i) In slides a & b , identify the organs. ii) Identify 1, 2 & 3 in each slide.

30. 13- Identify the organ. 14- Identify the structure indicated by the arrow. 15- Identify the tissue indicated by the arrow. 16- identify the structure indicated by the arrow. 16 (9)

31. (10) a) Identify the type of junction. b) Name the abbreviations marked by the letters: S – D – PS – G- CM - LM