43. Histological features of the oesophagus and stomach and relation to organ function

Question 1

What type of epithelium is present in the oesophageal mucosa?

Answer 1

stratified squamous non-keratinised epithelium

Question 2

What epithelium lines the ducts in the submucosa of the oesophagus? Does the oesophagus contain mucus glands in the submucosa?

Answer 2

Cuboidal or stratified cuboidal epithelium.

Yes, only the oesophagus and duodenum contain mucus glands in the submucosa

Question 3

What type of muscle is present in the upper third of the oesophagus?

Answer 3

Skeletal muscle

Question 4

What type of muscle is present in the middle third of the oesophagus?

Answer 4

A mixture of skeletal and smooth

Question 5

What type of muscle is present in the distal third of the oesophagus?

Answer 5

Smooth muscle

Question 6

What are gastric pits of the stomach?

Answer 6

Invaginations of the surface epithelium

Question 7

What are the gastric glands?

Answer 7

Tubular glands that extend from the base of the gastric pits to the muscularis mucosa

Question 8

List the layers of muscle in the stomach from innermost to outer

Answer 8

Oblique
Circular
Longitudinal

Question 9

What type of epithelium lines the stomach mucosa?

Answer 9

Simple columnar