Digestive System

Which of the following is not part of the alimentary canal?

• Salivary glands

• Esophagus

• Stomach

• Anus

Reorder the following layers from most superficial to deep

• Serosa

• Muscularis

• Submucosa

• Mucosa

The esophagus lacks which layer?

• Mucosa

• Submucosa

• Muscularis

• Serosa

Answer explanation

Instead, the esophagus has adventitia

Which of the following is not found in the retroperitoneal cavity

• Kidneys

• Duodenum

• Transverse colon

• Pancreas

Match the following

• Covers the transverse colon and small intestines

• Mesentery

• Binds the jejunum and ileum to the posterior abdominal wall

• Greater omentum

• Attaches the liver to the anterior abdominal wall and diaphragm

• Mesocolon

• Binds the transverse colon and sigmoid colon to the posterior wall

• Lesser omentum

• Connects the stomach and duodenum to the liver

• Falciform ligament

The two plexuses of the enteric nervous system:

• Mesenteric

• Myenteric

• Mucosal

• Submucosal

This enzyme is secreted by salivary glands to break down starch monosaccharides

• Salivary lipase

• Salivary amylase

• Pepsin

• Salivary peptidase

This organ of the GI tract secretes mucus and transports food material, but produces no enzymes and does not absorb nutrients

• Esophagus

• Ileum

• Colon

• Nasopharynx

Reorder the following regions of the stomach in order from superior to inferior

• Cardia

• Fundus

• Pylorus

• Body

Answer explanation

This one probably counts as a trick question, but recall that the fundus actually sits above the cardia.

Match the following stomach cells with their secretion

• Mucus

• Parietal cell

• Pepsinogen

• G cell

• Gastrin

• Chief cell

• HCl

• Mucous neck cell

Answer explanation

Technically, parietal cells secrete hydrogen ions and chlorine ions separately, but the net effect is hydrochloric acid