GI System

Question 1

nerve plexus in muscularis externa

Answer 1

Myenteric (auerbach’s) plexus

Question 2

what’s necessary for diagnosis of Barrett’s esophagus

Answer 2

Goblet cells

Question 3

What stain for identifying goblet cells

Answer 3

Alcian blue stains the acidic mucosubstances secreted by goblet cells

Question 4

What third of the esophagus is most likely to harbor an adenocarcinoma

Answer 4

Distal third

Question 5

What third of the esophagus is most likely to harbor a squamous cell carcinoma?

Answer 5

Middle third

Question 6

What type of esophageal cancer would most likely cause hoarseess? SCC or adenocarcinoma?

Answer 6

Squamous Cell Carcinoma. Interferes with recurrent laryngeal nerve

Question 7

How many anatomic esophageal constrictions?

Answer 7

4 total

1. junction of esophagus with pharynx
2. where aortic arch crosses esophagus
3. Where esophagus is compressed by L main bronchus
4. at esophageal hiatus. This is at T10

Question 8

what is pill esophagitis

Answer 8

more common in elderly. Difficulty advancing a pill thru esophagus. decreased muscle tone

Question 9

Where would you ligate the inferior thyroid artery when performing a thyroidectomy?

Answer 9

Superior to the esophageal branch (distal to it)

Question 10

In stomach, where are most ulcers found

Answer 10

Lesser curvature. Remove pyloris to treat historically

Question 11

Where do most gastrinomas develop

Answer 11

Gastinoma triangle

Question 12

6 primary feeders to stomach

Answer 12

R gastric
L gastric
R gastro omental
L gastro omental
Gastroduodenal
Splenic