PAEA Surgery End Of Rotation (EOR) Practice Exam

What role does lymphatic tissue in the appendix play?

1. Stores bile

2. Produces insulin

3. Assists in the production of immunoglobulin A antibodies

4. Filters toxins

The correct answer is: Assists in the production of immunoglobulin A antibodies

The lymphatic tissue in the appendix is primarily associated with the immune function of this structure. It plays a crucial role in the production of immunoglobulin A (IgA) antibodies, which are essential for mucosal immunity. IgA is found in various mucous membranes and secretions, including those in the gastrointestinal tract, respiratory tract, and urogenital tract, helping to protect these surfaces from pathogens and maintaining overall immune defense. The presence of lymphatic tissue in the appendix allows it to sample antigens from the intestinal lumen, facilitating the generation of an immune response, particularly in young individuals whose immune systems are still developing. This antibody production is vital for preventing infections and contributing to the body's first line of defense against ingested pathogens. While the other options mention functions unrelated to the primary role of the appendix, they do not accurately reflect the appendix's primary immunological function.