Module 5: GI

Question 1

4 layers of the GI tract

Answer 1

Mucosa - innermost
Submucosa
Muscularis
Adventitia - outermost

Question 2

Type of epithelium found in the esophagus

Answer 2

Stratified squamous epithelium

Question 3

4 anatomical regions of the stomach

Answer 3

Cardia
Fundus
Corpus (body)
Pylorus

Question 4

Another name for gastric pits

Answer 4

Foveolae

Question 5

4 features that contribute to the large surface area of the small intestine

Answer 5

Length of small intestine (4-6m)
Plicae circulares
Villi
Microvilli

Question 6

3 layers of the mucosa and the function of each

Answer 6

Epithelial lining - protection, secretion, absorption
Lamina propria - connective tissue support
Muscularis mucosa - local movement and folding of mucosa

Question 7

What is secreted in the cardia region of the stomach?

Answer 7

Mucous

Question 8

What layer of the GI tract thickens at the pyloric sphincter?

Answer 8

Muscularis

Question 9

What 2 cell types line the intestinal villi?

Answer 9

Enterocytes and goblet cells

Question 10

In what layer of the GI tract is GALT predominantly located?

Answer 10

Lamina propria