Flashcards in 26. Peyer patches Deck (11):
Peyer patches defintion
Unencapsulated lymphoid tissue A found in
lamina propria and submucosa of ileum.
Peyer patches Contain
specialized M cells that sample and
present antigens to immune cells.
B cells stimulated in germinal centers of Peyer
patches differentiate into
cells, which ultimately reside in
receives protective secretory
component and is then transported across the
epithelium to the gut to deal with intraluminal
• Peyer patches are made of which type of tissue: mucosal, lymphoid, or muscularis?
Lymphoid (Peyer patches are made of unencapsulated lymphoid tissue)
• In what two layers of the gastrointestinal tract are Peyer patches found?
The lamina propria and the submucosa
• What is the main action of M cells?
M cells take up antigens from the gut lumen for presentation to B cells and eventual creation of immunoglobulin A (IgA) antibodies
• After stimulated B cells from Peyer patches have differentiated into plasma cells, what do they then secrete?
Immunoglobulin A, or IgA (Intragut Antibody)
• After being secreted, immunoglobulin A (IgA) functions to bind what?
Intraluminal antigens (think IgA, the Intragut Antibody