What is the junction between the small intestine and the large intestine?

What is the junction between the small intestine and the large intestine?

• A. Pyloric valve
• B. Cardia
• C. Ileocecal valve
• D. Anal sphincter

Answer: (C)

The main idea is identifying the boundary between the small intestine and the large intestine. This junction is the ileocecal valve, a muscular valve at the end of the ileum where it meets the cecum. It controls the passage of chyme into the large intestine and helps prevent backflow into the ileum, marking the transition from small to large intestine. The other structures sit in different parts of the GI tract: the pyloric valve lies between the stomach and the duodenum; the cardia is the area at the stomach’s connection to the esophagus; and the anal sphincter is at the end of the digestive tract controlling defecation.

The main idea is identifying the boundary between the small intestine and the large intestine. This junction is the ileocecal valve, a muscular valve at the end of the ileum where it meets the cecum. It controls the passage of chyme into the large intestine and helps prevent backflow into the ileum, marking the transition from small to large intestine.

The other structures sit in different parts of the GI tract: the pyloric valve lies between the stomach and the duodenum; the cardia is the area at the stomach’s connection to the esophagus; and the anal sphincter is at the end of the digestive tract controlling defecation.