lymph nodules/organs

• Lymph nodules/MALTs:

  • Lymph nodules are not surrounded by a capsule

  • mucosa-associated lymphoid tissues

• tonsils

  • Form a protective ring around the throat to keep foreign invaders from entering the nose and mouth

• Peyer’s patches and appendix

  • Groups of lymphocytes near the small intestine, that filter, bacteria from food, and keep beneficial bacteria in the small intestine

LYMPH ORGANS

• thymus

  • Part of the endocrine and lymphatic system

  • Produces thymosin (causes T lymphocyte maturation)

  • T lymphocytes come to the thymus from bone marrow for thymic education

• spleen

  • Contains two types of tissues:

    • White pulp- filters blood

    • red pulp- removes worn-out red blood cells and is the storage reservoir for blood