The appendix, this little fellow, is a "small tail" on the colon, located between the human body's cecum and colon, a tube-like organ with a closed end and an opening near the cecum to the proximal side. The so-called blind tube is much like a super narrow dead-end street.
Given that it is an extremely narrow dead-end, it is prone to traffic jams, such as fecaliths, food, foreign bodies, or hyperplasia of lymphoid cells, which can easily get into this dead-end and then become stuck and unable to get out, leading to infection and triggering appendicitis.
The incidence of appendicitis is actually quite high, reaching up to 10% in Western countries, while in China, the incidence is between 4%-8.5%, accounting for 20%-30% of patients with acute abdomen conditions.