1. Final Unit Histology Slides

2. Oral Epithelium Buccal surface – stratified squamous non-keratinized epithelium

3. Filiform Papillae Circumvallate Papillae Fungiform Papillae Gustatory Receptor The Tongue & Gustatory Receptors

4. Esophagus Note the thick stratified squamous epithelium of the mucosa as well as the submucosa and muscularis layers. Muscularis Submucosa Mucosa

5. Stomach mucosa lamina propria muscularis mucosae gastric pit Identify the mucosa and its layers, as well as the gastric pits.

6. Duodenum

7. Microvilli SEM Microvilli TEM

8. Jejunum & Ileum Main difference is the absence of the submucosal glands or duodenal glands in the jejunum and ileum. Goblet cells are stained blue in this picture, and intestinal crypts are visible as well. These two portions of the small intestine are very similar, so we won’t separate them out histologically. There will be a gradual decrease in the number and size of villi as you progress towards the ileocecal valve, as well as an increase in the quantity of Peyer’s patches.

9. Ileum – Peyer’s Patches The large lymphatic nodules are the Peyer’s Patches, notice also the intestinal crypts and villi with increasing numbers of goblet cells.

10. Colon Section of the large intestine, notice the high concentration of goblet cells.

11. Salivary Glands Parotid Gland Sublingual Gland Submandibular Gland

12. Pancreas Pancreas viewed at low magnification, showing both the endocrine (pancreatic islets) and the exocrine cells. Pancreatic Islet Note the staining is different, showing the pancreatic islet with darker cells than the surrounding acini.

13. Liver Liver Lobule with central vein in middle, sinusoids visible as white spidery lines going towards the central vein.

14. Galbladder

15. Ovary with Follicles

16. Ovary showing Corpus Luteum

17. Uterus endometrium myometrium perimetrium

18. Testis & Epididymis

19. Penis corpora cavernosae corpora spongiosum spongy (penile) urethra