This slide presents some peculiar difficulties, but also abundant clues for correct identification.

Does this specimen appear to have been wrinkled or folded?

Does the tissue have distinct layers?

• If so, name the layers.

Can you identify a mucosal surface?

Does the putative mucosal surface have a continuous epithelium?

• If not, what might have happened to it?   (Some post-mortem specimens shed epithelial cells from exposed mucosal surfaces.)
• If the surface epithelium is missing, what other clues remain?
• Can you find any epithelial features?  If so, describe them.

Imagine how the lamina propria of various organs might appear, if there were no epithelium on the surface.

• Can you find lamina propria on this specimen?
• 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 there any muscle?  If so, the muscle organized into distinct layers?

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

More hints.