Which epithelium lines the stomach?

Which epithelium lines the stomach?

• A. Simple cuboidal epithelium
• B. Pseudostratified ciliated columnar epithelium
• C. Simple columnar epithelium
• D. Stratified squamous epithelium

Answer: (C)

The lining of the stomach is simple columnar epithelium. This means a single layer of tall, column-like cells that lines the gastric mucosa and forms the surface covering of the stomach and its gastric glands. This arrangement is ideal for secretion and protection: surface mucous cells within this epithelium produce mucus that coats and protects the stomach lining from the harsh acidic environment and digestive enzymes. The simple columnar form also supports the glandular invaginations (gastric pits and glands) that secrete gastric juice. In contrast, simple cuboidal epithelium is typical for many glands and kidney tubules, not the stomach’s mucosal surface. Pseudostratified ciliated columnar epithelium lines the respiratory tract, not the stomach. Stratified squamous epithelium lines areas subject to abrasion, like the esophagus, not the stomach lining.

The lining of the stomach is simple columnar epithelium. This means a single layer of tall, column-like cells that lines the gastric mucosa and forms the surface covering of the stomach and its gastric glands. This arrangement is ideal for secretion and protection: surface mucous cells within this epithelium produce mucus that coats and protects the stomach lining from the harsh acidic environment and digestive enzymes. The simple columnar form also supports the glandular invaginations (gastric pits and glands) that secrete gastric juice.

In contrast, simple cuboidal epithelium is typical for many glands and kidney tubules, not the stomach’s mucosal surface. Pseudostratified ciliated columnar epithelium lines the respiratory tract, not the stomach. Stratified squamous epithelium lines areas subject to abrasion, like the esophagus, not the stomach lining.