In addition to its absorptive and digestive roles, the small bowel also plays a significant role in the body’s immune system. Gut-associated lymphoid tissue (GALT) represents a major division of the immune system. Which of the following statement(s) is/are true concerning the immunologic functions of the small intestine?
A. The B lymphocytes of the small intestine do not produce immunoglobulin A (IgA)
B. Peyer’s patches, an example of an aggregated cellular portion of the gut-associated lymphoid system tissue, are large collections of lymphoid follicles found on the antimesenteric border of the ileum
C. The major immunoglobulin of the intestinal immune system is IgM
D. IgA produced by the intestinal immune system produces the classic Fc-mediated inflammatory reactions to antigen stimulus
Answer:B
In addition to its absorptive and digestive roles, the small bowel also plays a significant role in the body’s immune system. Gut-associated lymphoid tissue (GALT) represents a major division of the immune system. Which of the following statement(s) is/are true concerning the immunologic functions of the small intestine?
A. The B lymphocytes of the small intestine do not produce immunoglobulin A (IgA) B. Peyer’s patches, an example of an aggregated cellular portion of the gut-associated lymphoid system tissue, are large collections of lymphoid follicles found on the antimesenteric border of the ileum C. The major immunoglobulin of the intestinal immune system is IgM D. IgA produced by the intestinal immune system produces the classic Fc-mediated inflammatory reactions to antigen stimulus