OTHER LYMPHOID ORGANS

• Spleen - located on the left side of the abdomen, and filters blood of bacteria, viruses, and debris
• Tonsils - surrounds the pharynx, traps and removes bacteria and other foreign pathogens
• Peyer's patches - found in the wall of the small intestines, prevents bacteria from penetrating the intestinal wall
• Mucosa-associated lymphoid tissue (MALT) - includes Peyer's patches, tonsils, and appendix; acts as a sentinel to protect respiratory and digestive tracts