CGRN GI Anatomy and Pathophysiology 2

Question 1

Which layer of the GI tract wall contains the submucosal plexus (Meissner's plexus) responsible for regulating secretions?

Accepted Answer

Submucosa

Answer

Mucosa

Answer

Muscularis externa

Answer

Serosa

Question 2

A patient presents with steatorrhea and fat-soluble vitamin deficiencies. Which portion of the small intestine is most likely affected?

Accepted Answer

Jejunum

Answer

Duodenum

Answer

Ileum

Answer

Cecum

Question 3

What is the primary function of the sphincter of Oddi?

Accepted Answer

Regulate the flow of bile and pancreatic juice into the duodenum

Answer

Prevent reflux from the colon to the ileum

Answer

Control gastric emptying into the duodenum

Answer

Separate the esophagus from the stomach

Question 4

Which condition is characterized by transmural inflammation that can affect any portion of the GI tract from mouth to anus?

Accepted Answer

Crohn's disease

Answer

Ulcerative colitis

Answer

Irritable bowel syndrome

Answer

Microscopic colitis

Question 5

The portal vein is formed by the confluence of which two veins?

Accepted Answer

Superior mesenteric vein and splenic vein

Answer

Hepatic vein and inferior vena cava

Answer

Left gastric vein and right gastric vein

Answer

Inferior mesenteric vein and hepatic vein

Question 6

Which cells in the gastric mucosa are responsible for producing intrinsic factor and hydrochloric acid?

Accepted Answer

Parietal cells

Answer

Chief cells

Answer

G cells

Answer

Mucous neck cells