What is the small, finger-like sac attached to the cecum called?

• A. Ileum
• B. Appendix
• C. Caecum
• D. Pylorus

Answer: (B)

The structure described is the appendix. It is a narrow, blind-ended tube that projects from the cecum, usually on its posteromedial side near where the ileum joins the large intestine. It’s often about a few centimeters long but can vary. The appendix isn’t essential for digestion, though it may have roles in immune function and gut microbes. Clinically, inflammation of this structure (appendicitis) is a common cause of acute abdominal pain.

The ileum is the last section of the small intestine and connects to the cecum, not a finger-like pouch. The caecum is the pouch itself that receives chyme from the ileum. The pylorus is the stomach’s exit to the duodenum.