Gastrointestinal and Hepatic Histology

Simple columnar epithelium with no muscularis mucosae or submucosa

A memory aid for the microscopic structure of the biliary tract.

Parietal cells make acid and intrinsic factor, chief cells make pepsinogen, G cells make gastrin

A memory aid for the secretory cells of the gastric mucosa.

Mucosa, submucosa, muscularis externa and serosa or adventitia

A memory aid for the four layers of the gastrointestinal wall.

Zone 1 is periportal and best oxygenated; zone 3 is centrilobular and most vulnerable

A memory aid for the three zones of the hepatic lobule and their vulnerability.

Hepatic lobules with portal triads, and pancreatic acini with islets

A memory aid for hepatic and pancreatic microarchitecture.

Fenestrated endothelium, Kupffer cells and stellate cells

A memory aid for the microarchitecture of the hepatic sinusoid.

Each region has a characteristic epithelium and glandular pattern

A memory aid for identifying the region of the gut from its mucosa.

Parotid serous, sublingual mucous, submandibular mixed

A memory aid for distinguishing the major salivary glands microscopically.

Plicae, villi and microvilli multiply the area 600-fold

A memory aid for the three levels of folding that amplify absorptive surface.