Exam 1 Review Flashcards
1
Q
The big difference between the duodenum and stomach on cross section is ______________.
A
that the duodenum has the crypts of Lieberkuhn
2
Q
The muscles that stimulate the secretion of acid are in the ____________.
A
mucosa (not submucosa)
3
Q
True or false: ultrasound cannot detect pancreatitis.
A
True
4
Q
What three things stimulate CCK release?
A
- Monitor peptides released from the pancreatic acinar cells
- CCK-releasing peptide from duodenal and gastric mucosal cells
- Acetylcholine from the vagus nerve
5
Q
True or false: CCK potentiates release of secretin from centroacinar cells.
A
True.
6
Q
Describe the hamartomas in Peutz-Jeghers.
A
- Can occur anywhere in the GI tract
- Raise risk of breast and pancreas cancer
- Usually pedunculated
- NOT associated with TGFbeta mutations
7
Q
True or false: HER2/neu amplification is critical for initiation and potentiation of colorectal cancer.
A
False
8
Q
The walls of a bile canaliculus are made of ____________.
A
hepatocytes
