Case 3 - Esophagus

Question 1

A 40 years old man presented to the outpatient clinic complained from Barrett esophagus due to untreated GERD . What is the effect of this condition on his esophageal mucosa layer ?

Answer 1

Metaplastic changes in the stratified squamous epithelium of the esophageal mucosa

Question 3

What is the lining of the esophagus mucosa?

a) stratified nonkeratinized squamous epithelium
b) simple columnar epithelium
c) stratified columnar epithelium

Answer 3

a) stratified nonkeratinized squamous epithelium

Question 4

What is found in the esophagus Submucosa layer?

Answer 4

Esophageal glands

Question 5

Swallowing begins with voluntary muscle action but finishes with ______________ ?

Answer 5

Involuntary peristalsis

Question 6

Mention the esophageal muscularis of each of the following portions :

a) Upper 1/3 of esophagus: __________
b) Middle portion : __________
c) Lower third : ______________

Answer 6

a) Upper 1/3 of esophagus: skeletal muscle ( similar to the tongue)
b) Middle portion : combination of skeletal & smooth muscle fibers
c) Lower third : smooth muscle

Question 7

Which part of the esophagus is covered by serosa ?

Answer 7

Distal 1-2 cm of esophagus