Gastrointestinal: SMP Histology

Question 1

What are the four common layers of the gastrointestinal wall

Answer 1

Inner to outer (1-4)

1. Mucosa
2. Submucosa
3. Muscularis externa
4. Serosa OR Adventitia

Question 2

What part of the small intestine is this section taken from?

Answer 2

Duodenum

Question 3

What part of the small intestine is this section taken from?

Answer 3

Jejunum

Question 4

What part of the small intestine is this section taken from?

Answer 4

Ileum

Question 5

What three modifications of the small intestines increase surface area?

Answer 5

1. Plicae circularis
2. Villi
3. Striated border: microvilli

Question 6

Name the structures are indicated by the box and arrow on this small intestine specemin

Answer 6

Box: villus

Arrow: muscularis mucosae

Question 7

Name the structures are indicated on this small intestine specemin

Answer 7

Light blue line: Epithelium

Dark blue line: Lamina propria

Dotted line: Vilus

Question 8

Name the structures indicated by the arrows on this small intestine specemin

Answer 8

Left to right:

1. Microvilli on columnar epithelial cells
2. Goblet cell