Organs Involved

• Spleen: filters and cleanses blood of bacteria, viruses, and other debris. Provides a lymphocyte profileration. Destroys worn-out red blood cells and return some of their breakdown products to the liver.

• Thymus: Produces hormone that programs lymphocytes so they can carry out their protective roles in the body.

• Tonsils: traps and remove bacteria or any other foreign pathogens entering the throat.

• Peyer's patches: capture and destory bacteria in the intestinal wall

• Lymph nodes: help protect the body removing foreign material

• Lymphatic vessels: to form an elaborate drainage system picks up this excess tissue fluid