ENDO Index

The source for this specimen should be obvious (and confidently so), provided you are familiar with the organ it represents.

Note the several distinct layers.

• Name these layers.

Which organs have such distinct layers?

Note specific features of the mucosal layer.

• What shape is the surface?
• How many different kinds of epithelial cells comprise the surface epithelium?
• Is lamina propria conspicuous?
• Are there any epithelial features (e.g., glands or crypts) embedded in the lamina propria?
• Can you find a muscularis mucosae?

Are there any distinctive features in the submucosa?

Is the muscularis externa organized into distinct layers?

Hints on the next page are a bit more pointed.  Don't look unless you are stuck.

More hints.