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G.I. And Nutrition - Images > Histology of the Alimentary Tract > Flashcards

Histology of the Alimentary Tract Flashcards

1
Q

Is this esophagus, stomach, small intestine, or large intestine?

A

Esophagus

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2
Q

What is this structure? What is this epithelium called?

A

Esophagus. Squamous non-keratinized epithelium.

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2
Q
A

Enterochromaffin cells stained with a neurendocrine marker

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4
Q

What are the blue cells in the middle of this picture?

A

Ganglion cells of the myenteric plexus, sandwiched in between the inner circular muscle layer and the outer longitudinal muscle layer.

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4
Q

Is this esophagus, stomach, small intestine, or large intestine?

A

Small intestine

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5
Q

What structure is this? What are the folds?

A

Stomach. Rugae.

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5
Q

What are the pink cells (red arrows)? What do they secrete? What layer are they found in?

A

Parietal cells

Acid

Lamina Propria

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6
Q
A

Corpus of the stomach

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7
Q
A

Gastric Antrum

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8
Q

This is a histological section of the stomach (corpus). Which image is abnormal?

A

Abnormal on the right - note lymphocytes in the lamina propria.

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9
Q
A

Chief cells. Pepsinogen.

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10
Q
A

Gastrin producing neurendocrine cells in the antrum

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12
Q

The blue cells are in between two muscle layers in the esophagus. What are they?

A

Ganglion cells of the myenteric plexus

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12
Q

This is the gastric antrum. Which side is normal? Which side is abnormal?

A

Left - normal

Right - carcinoma

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13
Q

What (single-cell layer) is the black arrow pointing to?

A

Serosal layer of the stomach

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14
Q
A

Stomach. Note the rugae.

15
Q
A

Stomach

17
Q

What is this? What is on the right and what is on the left?

A

Transition from the esophagus (right) to cardia of the stomach (left)

19
Q

Is this esophagus, stomach, small intestine, or large intestine?

A

Stomach

20
Q

What is this structure, and what are the little black dots?

A

Stomach - black dots are gastric pits!

21
Q

Is this esophagus, stomach, small intestine, or large intestine?

A

Large intestine

22
Q

What tissue are we in? What are the blue things?

A

Esophagus - the blue things are acini.

23
Q

What is this a picture of? Why are no rugae present?

A

This is a picture of the stomach taken on endoscopy. The reason you can’t see rugae is that the stomach was inflated with air.

24
Q

What might this stain be?

A

Ki67 - stains for proliferating cells

25
Q
A

Endoscopic picture of an esophagus

G.I. And Nutrition - Images (15 decks)

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