Final Unit Histology Slides

Oral Epithelium

Buccal surface – stratified squamous non-keratinized

epithelium

Filiform Papillae Circumvallate Papillae

Fungiform Papillae

Gustatory Receptor

The Tongue & Gustatory Receptors

Esophagus

Note the thick stratified squamous epithelium of the mucosa as well as the submucosa and muscularis layers.

Muscularis

Submucosa

Mucosa

Stomach

mucosa

lamina propria

muscularis mucosae

gastric pit

Identify the mucosa and its layers, as well as the gastric pits.

Duodenum

Microvilli SEM Microvilli TEM

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.

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.

Colon

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

Salivary Glands

Parotid Gland

Sublingual Gland

Submandibular Gland

Pancreas

Pancreas viewed at low magnification, showing both the endocrine (pancreatic islets) and

the exocrine cells.

Pancreatic IsletNote the staining is different, showing the pancreatic islet with darker cells than the

surrounding acini.

Liver

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

Galbladder

Ovary with Follicles

Ovary showing Corpus Luteum

Uterus

endometrium

myometrium

perimetrium

Testis & Epididymis

Penis

corpora cavernosae

corpora spongiosum

spongy (penile) urethra