PAEA Surgery End Of Rotation (EOR) Practice Exam

Which function does the appendix serve in adults?

1. Produces bile

2. Stores nutrients

3. Assists with B lymphocyte maturation

4. Filters blood

The correct answer is: Assists with B lymphocyte maturation

The appendix serves a role in the immune system, particularly in the maturation of B lymphocytes. This is significant because B lymphocytes are a type of white blood cell crucial for producing antibodies, which help the body fight off infections. In adults, the appendix is not essential for survival, as individuals can live without it; however, it does contribute to the immune functions by supporting the proliferation and differentiation of B cells. In contrast, the other choices do not accurately represent the functions of the appendix. The production of bile is carried out by the liver, not the appendix. Nutrient storage is primarily a function of the liver and various parts of the digestive system, such as the stomach and intestines. Blood filtration occurs in the kidneys and spleen, rather than in the appendix. Thus, the role of the appendix in assisting with B lymphocyte maturation is the most pertinent function in adults.